Recent questions tagged scope

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scope - Nested Python class needs to access variable in enclosing class

I've seen a few "solutions" to this, but the solution every time seems to be "Don't use nested classes, ... to access the parent's information? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scope error in if statement in java program

I'm having an issue with scope in an if statement, at least, I'm pretty sure that is where my error is, ... CANNOT BE RESOLVED TO BE A VARIABLE See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scope - access variables from other function c++

I must access variables declared inside other function. Assume f1() void f1() { double a; int b; // ... Declaring global variables also denied. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scope - Why, in AppleScript, can't you declare references to variables local to handlers?

Why can't you declare and use references to variables unless the variable referenced is scoped globally? Please explain ... in this test code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scope - Angular Dart component events

I am trying to pass custom events from a component to its parent component/controller confirm.html <div class=" ... thing i'm searching for? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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581 views

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scope - Using Python's max function when you have a variable named max?

Python includes the built in max() function. However, despite it being built in it is not a keyword. That ... other built in functions as well. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scope - Python eval(compile(...), sandbox), globals go in sandbox unless in def, why?

Consider the following: def test(s): globals()['a'] = s sandbox = {'test': test} py_str = 'test("Setting A ... 'b' in globals() # returns False See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scope - How do I show unscoped models in Rails Admin?

I needed this myself, so here it is QA-style: By default, Rails Admin shows a model's default_scope. ... show every model completely unscoped? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scope - Does Python scoping rule fits the definition of lexical scoping?

According to my programming language class, in a language that uses lexical scoping The body of a function is ... as using lexical scoping? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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700 views

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scope - C# variable scoping not consistent?

C# is quite nit-picking when it comes to variable scoping. How is it possible that it accepts this code: class ... VS 2010) accepts it. Why? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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496 views

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scope - Why make global Lua functions local?

I've been looking at some Lua source code, and I often see things like this at the beginning of the file ... access them faster when often used? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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592 views

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scope - Why make global Lua functions local?

I've been looking at some Lua source code, and I often see things like this at the beginning of the file ... access them faster when often used? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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727 views

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scope - Lexical scoping vs dynamic scoping

So I have this problem where I have to figure out the output using two different scoping rules. I know the output ... So the output is 2 4? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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542 views

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scope - Finding records with no associated records in rails 3

class Person < ActiveRecord::Base has_many :pets scope :with_dog, join(:pets).where("pets.type = 'Dog'") scope ... s escaping me at the moment. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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662 views

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scope - How to access a (shadowed) global function in ruby

I was wondering how to access a global function fn in ruby from a class which also defined a method fn. I ... specifically what I'm looking for. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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616 views

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scope - What are the advantages of dynamic scoping?

I've learned that static scoping is the only sane way to do things, and that dynamic scoping is the tool of the ... seeing it as a good thing. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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541 views

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scope - Writing functions in R, keeping scoping in mind

I often write functions that need to see other objects in my environment. For example: > a <- 3 > b <- 3 ... function? Is there a better way? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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495 views

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scope - Declaring an object before initializing it in c++

Is it possible to declare a variable in c++ without instantiating it? I want to do something like ... Maybe something clever with references? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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433 views

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scope - How to get the this of a object in a handler for a click event in jquery?

// begin signals this.loginSignal this.init = function(){ // init signals this.loginSignal = new t.store. ... any clearer way around? thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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565 views

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scope - JavaScript tell which condition was hit

If I have a statement in JavaScript like: if(!me.a || !me.b || !me.c) { // I want to know ... inside the scope? Is there any magic operator? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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437 views

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scope - Why can't the VBA Me keyword access private procedures in its own module?

I just discovered that the Me keyword cannot access private procedures even when they are inside its own class ... find any good documentation. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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520 views

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scope - PHP Function Accessing Database Connection

How do I allow a function to access a database connection without using GLOBAL? config.php DEFINE ('DB_HOSTNAME', ... be mysqli, null given in See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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531 views

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scope - Understanding JavaScript function scoping

The code below is JavaScript code. I am trying to understand function scope in JavaScript and following the article ... string "purple" now ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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434 views

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scope - Confusion with "this" object in JavaScript anonymous functions

Hi I have following JavaScript code that I am trying to run. My aim is to grasp the meaning of this in ... have this bound to window object? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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515 views

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scope - Understanding lexical scoping in R

I am reading this paper (ungated copy) on evaluating the design of the R programming language, and am not ... the principles of lexical scoping? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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575 views

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scope - cmake, lost in the concept of global variables (and PARENT_SCOPE or add_subdirectory alternatives)

I have a cmake project in which I have some modules and I'm using Find-*.cmake for including the shared ... m looking for a cleaner solution. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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594 views

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scope - Nested subroutines and Scoping in Perl

I'm writing Perl for quite some time now and always discovering new things, and I just ran into something ... cases, but just saw that. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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566 views

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scope - R scoping: disallow global variables in function

Is there any way to throw a warning (and fail..) if a global variable is used within a R function? I think ... the value of sUm it should fail. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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