Proc Macro

proc_macro - Rust

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(1 week ago) Sep 06, 2021  · A support library for macro authors when defining new macros. This library, provided by the standard distribution, provides the types consumed in the interfaces of procedurally defined macro definitions such as function-like macros #[proc_macro], macro attributes #[proc_macro_attribute] and custom derive attributes#[proc_macro_derive].. See the book for more.

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proc_macro2 - Rust

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(1 week ago) A wrapper around the procedural macro API of the compiler's proc_macro crate. This library serves three purposes: Bring proc-macro-like functionality to other contexts like build.rs and main.rs. Types from proc_macro are entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro. Meanwhile proc_macro2 types may exist anywhere including non-macro code.

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243-29: SAS Macro Programming for Beginners

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(1 week ago) Here are the standard SAS statements that are generated by the macro processor. The first PROC PRINT is generated by the first call to the PRINTIT macro, the PROC SORT comes from the origin al program and the second PROC PRINT is generated by the second call to the PRINTIT macro. PROC PRINT DATA = models NOOBS; TITLE 'Current Models'; VAR Model ...

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Using PROC SQL with the SAS Macro Facility :: SAS(R) …

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(2 days ago) Macro variables provide an efficient way to replace text strings in SAS code. The macro variables that you create and name are called user-defined macro variables. The macros variables that are defined by SAS are called automatic macro variables. PROC SQL produces six automatic macro variables (SQLOBS, SQLRC, SQLOOPS, SQLEXITCODE, SQLXRC, and ...

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rust - How to use proc_macro in normal module - …

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(3 days ago) Jan 20, 2021  · Question: how to re-write this macro in normal module? It sounds a bit like you're asking how you can express it as a macro in a "normal" module. Which I interpret as using macro_rules, given that the hex proc macro is simply adding [...] square brackets around the input. You can easily do that with macro

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rust - How do I create a proc_macro_attribute? - Stack ...

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(1 week ago) Sep 30, 2018  · The #[proc_macro] for function-like macros and #[proc_macro_derive] for custom derives work the same, except they only have one TokenStream argument. These are defined in the proc_macro crate. The first token stream is the arguments in the attribute, the second is the body of the annotated item.

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Actionable Insight Into China’s Political Economy | PRC …

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(2 days ago) Nov 19, 2018  · Macro Monday: 10.22.18. In Focus: The economy in China has entered uncharted waters, and past performance is no guarantee of future results. In Focus: China’s consumer transition will be the economic story of the 21st century, and our detailed proprietary household data tracks progress.

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proc macro server crashed · Issue #8925 · rust-analyzer ...

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(1 week ago) May 17, 2021  · Disabling proc macros will break a lot of functionality for stable users; it's not an option. We might want to think about supporting multiple ABI versions, or detecting nightlies with broken ABI and disabling proc macros for those; on the other hand, once we're following …

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What is the Difference Between Macro and Procedure ...

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(6 days ago) Jun 10, 2019  · The main difference between Macro and Procedure is that the Macro is used for a small number of instructions; less than ten instructions, but Procedure is used for a large number of instructions; higher than ten instructions.. A microprocessor is a computer processor that performs the tasks of a Central Processing Unit on a single integrated circuit (IC).

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Procedural Macros: The Basics | blog.turbo.fish

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(1 week ago) Feb 16, 2021  · [lib] proc-macro = true A proc-macro crate can only export proc-macros, no regular functions, types, modules or macro_rules! macros. It can of course define other items, but it cannot export them for use in other crates. The crates involved. Every proc-macro crate can access the builtin proc_macro crate.

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The SAS ICC9 Macro - Harvard University

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(5 days ago) The %ICC9 macro is a SAS version 9 macro that computes re-liability coefficients (intraclass correlation coefficients) and their 95% confidence intervals. These quantities can be calculated after first ad-justing for fixed effects. Keywords: SAS, macro, PROC MIXED, ICC, intraclass

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An Incomplete Explanation of the Proc Macro That …

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(6 days ago) May 04, 2021  · proc_macro2 was an essential crate for testing. The signature of a proc_macro function will look something like this: # [proc_macro] pub fn generate_census_structs(item: proc_macro::TokenStream) -> proc_macro::TokenStream. Unfortunately, you can’t directly call this function in a # [test]. One option is to create a new project just to use the ...

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Solved: Proc Import with Macro Variable - SAS Support ...

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(5 days ago) Jan 07, 2018  · Proc Import with Macro Variable Posted 01-06-2018 03:07 PM (9334 views) Hello , Im trying to import a few data sets in SAS Studio with a macro but somehow it isn't reading the macro statement in the filename and gives me an error:

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Engineering Rust Tips #1: Proc Macro Debugging

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(1 week ago) Jan 08, 2021  · Proc Macro. Proc macro is an relatively unique language characteristics in Rust. It is great for library writers but notorious to figure out the problem when bugs happen. Unfortunately, bugs always happen… So, it should be careful to use self-brewed proc macros in large engineering.

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GitHub - dtolnay/proc-macro-hack: Procedural macros …

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(6 days ago) Proc macros in pattern position are not supported. By default, nested invocations are not supported i.e. the code emitted by a proc-macro-hack macro invocation cannot contain recursive calls to the same proc-macro-hack macro nor calls to any other proc-macro-hack macros. Use proc-macro-nested if you require support for nested invocations.

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CREATING MACRO VARIABLES VIA PROC SQL

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(1 week ago) CREATING MACRO VARIABLES VIA PROC SQL Mike S. Zdeb, New York State Department of Health INTRODUCTION There are a number of ways to create macro variables. You can use %LET to create a macro variable containing a character string. You can use CALL SYMPUT if you want to store the value of a given variable rather than a character string.

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Procedure and Macro (16 marks) - SNJB

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(1 week ago) Procedure and Macro (16 marks) Define procedure : A procedure is group of instructions that usually performs one task.It is a reusable section of a software program which is stored in memory once but can be used as often as necessary.

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Proc Macros - UI & Macros - Wowhead Forums

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(1 week ago) A macro isn't running in the "background" like an addon might be, it happens when you press the key it's assigned to and that's it. If you could make the macro speak on a proc, you could make it use a skill on a proc, which would be having the game auto-played.

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Introduction to SAS Macro Language - IDRE Stats

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(1 week ago) A macro program for repeating a procedure multiple times; The SAS macro language is a very versatile and useful tool. It is often used to reduce the amount of regular SAS code and it facilitates passing information from one procedure to another procedure. Furthermore, we can use it …

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Writing cleaner and more powerful SAS code using …

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(1 week ago) %macro reg; proc reg data=dataset; model outcome = age sex; run; %mend reg; • A macro that has been assigned can then be referenced with % name. The above regression procedure would be run with: % reg; Macro Parameters • The ability to pass parameters to macros make them much more useful.

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Introduction : Generating SAS Code Using Macros

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(6 days ago) When the macro executes, the macro processor matches the values specified in the macro call to the parameters in the macro definition. (This type of parameter is called a keyword parameter.) Macro execution produces the following code: proc plot; plot income*age; run; proc plot; plot income*yrs_educ; run; Using parameters has several advantages.

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proc_macro_attribute Revisited — Llogiq on stuff

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(1 week ago) Nov 10, 2018  · proc_macro_attribute Revisited. Recently, the procedural macro interface was somewhat stabilized. OK, there’s still the unstable proc_macro_hygiene feature you have to activate, but at least the registrar and rustc_private are no longer needed. So I set out to rewrite flamer, my most simple procedural macro crate, to the new interface, using ...

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Macro Madness: Creating Macro Calls with Proc Freq

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(1 week ago) The example will use macro language and proc freq to automatically generate a macro call for each level of a demographic variable. For example, using one parameter, ‘country’, the macro will produce over 500 macro calls to a second macro. INTRODUCTION

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quote::quote - Rust

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(1 week ago) Meanwhile Rust procedural macros are expected to return the type proc_macro::TokenStream. The difference between the two types is that proc_macro types are entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro, while proc_macro2 types may exist anywhere including tests and non-macro code like main.rs ...

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proc-macro2 — Rust proc macro helper // Lib.rs

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(1 week ago) Jul 23, 2021  · proc-macro2. A wrapper around the procedural macro API of the compiler's proc_macro crate. This library serves two purposes: Bring proc-macro-like functionality to other contexts like build.rs and main.rs. Types from proc_macro are entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro.

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Procedural macros in Rust - LogRocket Blog

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(1 week ago) Dec 21, 2020  · Procedural macros, on the other hand, allow you to operate on the abstract syntax tree (AST) of the Rust code it is given. As far as function signatures go, a proc macro is a function from a TokenStream (or two) to another TokenStream, where the output replaces the macro invocation.This allows you to inspect the Rust code at compile time and facilitates sophisticated code generation based on ...

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hecs-component-provider-macros — Rust proc macro …

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(1 week ago) Sep 22, 2021  · See also: hecs-component-provider, yaks, nitric-component, oxur-component, hecs-macros, amethyst_ecs. Lib.rs is an unofficial list of Rust/Cargo crates. It's open-source, created by kornelski. If something is missing or incorrect with the site, please file a bug. This page was generated on 2021-09-26.

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A reference for creating proc macros without …

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(1 week ago) Hey folks, this is my Sunday afternoon project that I decided to write after a proc macro we use at work broke with a recent nightly build. You can read my full thoughts on this matter here but the tl;dr is that the proc macro wasn't really written with proper parsing logic and converted the lines of the input TokenStream to a string and did string-based matching.

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SAS Macros: Beyond The Basics

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(1 week ago) Macro programmers generally accept that macros create SAS code. The simplest use is to assign a value to a macro variable and then have the value resolve to create code: %let table = sashelp.gnp; proc print data=&table; run; Another form of this basic use is to wrap the PROC PRINT step within a macro definition and

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Import Files with Macro - SAS Support Communities

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(4 days ago) Nov 16, 2016  · I wrote this answer a few days ago for DBF files but it can easily be modified for XLSX files, modify the proc import in the macro. You would need to create a dataset with the filenames and output dataset name to pass to the macro but that's an easy step.

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Using PROC SQL with the SAS Macro Facility - SAS …

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(1 week ago) Overview of Using PROC SQL with the SAS Macro Facility. The macro facility is a programming tool that you can use to extend and customize SAS software. The macro facility reduces the amount of text that you must enter to perform common or repeated tasks and improves the efficiency and usefulness of your SQL programs.

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SAS Macros Made Easy - ListenData

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(1 week ago) SAS Macros Made Easy. This tutorial explains SAS macros with practical examples. SAS Macro programming is considered as an advanced SAS. Knowing SAS Macros is an advantage in the job market over other candidates. Upon completion of this tutorial, you would understand how to create macros …

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SAS Help Center

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(2 days ago) Sep 09, 2021  · Macro Variables for Setting Global Values. Beginning with SAS 9.4M3, PROC HTTP produces two automatic macro variables to enable you to set or change default PROC HTTP settings. PROCHTTP_PROXY= proxy-server-name-and-port-number; sets a default proxy server for PROC

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14. SAS MACRO Programming — Intro to SAS Notes

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(1 week ago) Oct 10, 2020  · 14.1. MACRO Variables and %LET¶. The general form of a %LET statement is: %LET macro-variable-name = value;. where macro-variable-name is a name you make up following the standard rules for SAS names (32 characters or fewer in length, starting with a letter or underscore, and containing only letters, numerals or underscores).Value is the text to be substituted for the macro variable name, and ...

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Macros in Rust: A tutorial with examples - LogRocket …

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(1 week ago) Feb 03, 2021  · A proc macro is a function from a TokenStream (or two) to another TokenStream, where the output replaces the macro invocation; Let’s zoom in on both declarative and procedural macros and explore some examples of how to use macros in Rust. Declarative macros in Rust.

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bugs.debian.org

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(3 days ago) We would like to show you a description here but the site won’t allow us.

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How do you debug while developing proc macros? : rust

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(1 week ago) The whole beauty of proc-macro2 is that while the API is compatible with proc-macro it's also usable outside of proc macros. In fact the readme specifically states it's great for using in unit tests. Break your problematic macros down into bite sized pieces that you can shove into a test. For example:

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Macros for Beginners - SAS

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(1 week ago) Macro variable Challenge: Need to import many tables Macro variables -an efficient way of replacing text strings in SAS code. The simplest way to define a macro variable is to use the %LET statement to assign the macro variable a name Variable name- subject to standard SAS naming conventions %let table = Polygon;

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Learn PROC SQL, SAS Macros And Advanced SAS …

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(5 days ago) PROC SQL is a powerful Base SAS Procedure that combines the functionality of DATA and PROC steps into a single step. PROC SQL can sort, summarize, subset, join (merge), and concatenate datasets, create new variables, and print the results or create a new table or view all in one step!

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Create Macro Variables with SELECT INTO - SAS …

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(1 week ago) Jul 03, 2020  · Create two macro variables with SELECT INTO. If you want to create a second macro variable that contains the value of the Model, you could reuse the code above. However, the code below shows a more elegant way. proc sql noprint; select make, model into :macro_make, :macro_model. from work.ds;

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Getting the Most Out of 'INTO' in PROC SQL: An …

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(6 days ago) i You can check the PROC SQL macro variable SQLOBS to see the number of rows produced by a query-expression. See “Macro Variables Set by Statements in the SQL Procedure” on page 118 of the SAS Guide to the SQL Procedure for more information.

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Data-driven SAS macro loops - SAS Users

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(1 week ago) Mar 04, 2016  · This implementation of the macro %do-loop works perfectly fine, except in the situations when we need to use it within a data/proc step. The problem is the data _null_ statement that converts primary index &i to the secondary index &cntry, since we can’t use a data step within another data step. SAS macro loop within data or proc step

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Select Into Multiple Macro Variables in SAS Proc SQL - …

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(1 week ago) Nov 20, 2020  · This tells Proc SQL to create as many macro variables as the SQL query processes. In this case, the query processes 19 observations (the entire data set) since we do not have any where clause. The result is 19 macro variables n1, n2, n3 … n19. We can use the automatic variable &sqlobs to keep track of the number of macro variables that we create.

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Create a SAS macro variable that contains a list of values

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(5 days ago) Jan 18, 2016  · The SQL procedure provides an easy way to concatenate the values of a variable into a macro variable.Use the SEPARATED BY keywords to specify a character to delimit the values. Usually the delimiter is a blank character, as below, but in some situations you might want to use a comma.

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FAQ about proc macro?

Can you use proc macro2 in other contexts?

Bring proc-macro-like functionality to other contexts like build.rs and main.rs.Types from proc_macroare entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro. Meanwhile proc_macro2types may exist anywhere including non-macro code. ... Read more

How does Proc import work in macro SAS?

Proc import relies on Excel to tell SAS the variable type and size and is notorious for what human's think of errors. ... Read more

How to create derive macro in Proc-macro crate?

If you just want to read code without explanations though, here is the link you need: https://github.com/jplatte/proc-macro-blog-examples First off, we need to create the proc-macro crate that is going to contain our derive macro. We'll name it derive_getters and create it using to its Cargo.toml and add dependencies on proc-macro2, syn and quote. ... Read more

What is a macro variable in Proc SQL?

SQL stands for Structured Query Language and is a standardized database language. Proc sql can create SAS macro variables that contains values from a query result. In the following example we create a macro variable called w55 , which contains the number of students whose writing scores are higher than or equal to 55. ... Read more