Recent questions tagged syntax

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syntax - How to write an empty indentation block in Python?

The runtime keeps telling me: expected an indented block But I don't want write nothing inside my except ... catch and swallow the exception. 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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syntax - What's the difference between unsigned long/long/int in c/c++?

It seems all of them take 4 bytes of space, so what's the difference? See Question&Answers more detail:os...

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

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841 views

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syntax - What is type ascription?

Several times I've used the wrong syntax, such as forgetting to use let in this example: let closure_annotated = | ... or what is its purpose. See Question&Answers more detail:os...

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

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644 views

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syntax - Multiple CSS Pseudo Classes

What is the proper CSS syntax for applying multiple pseudo classes to a selector. I'd like to insert "," ... know what the proper syntax is. See Question&Answers more detail:os...

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

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533 views

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syntax - PHP difference between and

Simple question... I have seen people tell me to use " " in various places and others tell me to use " ... the other they only sometimes work. See Question&Answers more detail:os...

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

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675 views

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syntax - What does the === operator do in Kotlin?

What does operator === do in Kotlin? How does it work? Can we check reference equality? val a: Int = 10000 ... that it can be taken one value? See Question&Answers more detail:os...

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

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626 views

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syntax - Difference between const declarations in C++

What is the difference between void func(const Class *myClass) and void func(Class *const myClass) See also: C++ ... ++? and probably others... See Question&Answers more detail:os...

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

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547 views

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syntax error - JavaScript: {}==false is a SyntaxError?

In Firefox 3.5, I type this in the Firebug console : false=={} // => evals to false {}==false // syntax error What is the explanation for this ? 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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syntax - Bash command groups: Why do curly braces require a semicolon?

I know the difference in purpose between parentheses () and curly braces {} when grouping commands in bash. But ... (x86_64-pc-linux-gnu) See Question&Answers more detail:os...

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

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syntax - What is the difference between these `git fetch` syntaxes?

I've bare-cloned?a repository (git clone --bare) and apparently git fetch doesn't ... -c08b44b7f290ef0bc9abe3a0b974695c85a69342.pack 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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689 views

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syntax - Private scoping with square brackets (private[...]) in Scala

I've come across the following syntax while looking through the Gatling source code: private[http] def build = ... where that alias was defined. 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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syntax - Breaking a line of python to multiple lines?

In C++, I like to break up my lines of code if they get too long, or if an if statement if there are a ... is possible, but it would be cool! See Question&Answers more detail:os...

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

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1.2k views

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syntax - Haskell "do nothing" IO, or if without else

I want to do something in Haskell that looks like this: main1 = do s <- getLine if s == "foo" then putStr ... 's the preferred way to do this? See Question&Answers more detail:os...

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

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786 views

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syntax - Python, what does an underscore before parenthesis do

Looking through some of the Django code at authentication forms I noticed the following syntax label=_("Username") ... around "Username" do? See Question&Answers more detail:os...

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

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641 views

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syntax - Kotlin secondary constructor

How do I declare a secondary constructor in Kotlin? Is there any documentation about that? Following does not compile... ... length) { ... } } See Question&Answers more detail:os...

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

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721 views

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syntax - Fibonacci's Closed-form expression in Haskell

How would the Fibonacci's closed form code look like in haskell? See Question&Answers more detail:os...

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

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539 views

1 answer

syntax - Hive: writing column headers to local file?

Hive documentation lacking again: I'd like to write the results of a query to a local file as well as the names ... 't to keep bothering them... See Question&Answers more detail:os...

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

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493 views

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syntax - How does "object.new" work? (Does Java have a .new operator?)

I came across this code today whilst reading Accelerated GWT (Gupta) - page 151. public static void getListOfBooks( ... this in the java spec? See Question&Answers more detail:os...

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

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716 views

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syntax highlighting - How do I edit the Solarized (Light) theme in Sublime Text 3

I am trying to edit some of the syntax colours in Sublime Text 3. I'm using the Solarized (Light) built in ... the settings file (on a Mac)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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617 views

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syntax - Use-case of `oneway void` in Objective-C?

I found a strange keyword in NSObject.h - (oneway void)release; I searched the web, and learned it relates ... good use-cases of this keyword? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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515 views

1 answer

syntax - Why does c allow main() even when it is not int main() or void main()?

While reading the K&R 2nd edition I noticed that the programs always began with "main(){". I had always thought ... and what is the difference? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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771 views

1 answer

syntax - JavaScript - Why can't I call a variable "name"?

Why can't you call a variable in JS "name"? var wrapper = document.createElement("div"); var name = document. ... an empty string? I use Chrome. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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683 views

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syntax - What does exclamation point stand for in HTML in constructs like DOCTYPE and comments?

I am curious about the syntax of the doctype and comment tags... Why the exclamation point? What is ... /html-markup/syntax.html#doctype-syntax See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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599 views

1 answer

syntax - Why can you omit the surrounding parentheses for generators in Python when passing it into a function?

I was just experimenting in Python with different syntax for passing in a generator as an argument to a ... ^ SyntaxError: invalid syntax See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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569 views

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syntax - What is the => token called?

The => token is part of the C# 3.0 lambda syntax. My efforts to find the name of this token have failed so far. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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768 views

1 answer

syntax - What does an @ symbol mean in a Rust declarative macro?

I have seen the @ symbol used in macros but I cannot find mention of it in the Rust Book or in any ... just creating another top-level macro? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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586 views

1 answer

syntax - In javascript, can I override the brackets to access characters in a string?

Is there some way I can define String[int] to avoid using String.CharAt(int)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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504 views

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syntax - Why would you use "AS" when aliasing a SQL table?

I just came across a SQL statement that uses AS to alias tables, like this: SELECT all, my, stuff FROM ... table aliasing or leaving it out. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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