Recent questions tagged Syntax

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syntax - How do I create a link to a footnote in HTML?

For example: This is main body of my content. I have a footnote link for this line [1]. Then, I have ... exactly do I accomplish this in HTML? 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 - Is there a better way to express nested namespaces in C++ within the header

I switched from C++ to Java and C# and think the usage of namespaces/packages is much better there ... for discovery purposes using namespaces. 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 - Is there a specification for a man page's SYNOPSIS section?

I'm trying to write some specifications to be shared between a small team and getting picky about the ... optional arguments it understands. 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 do the different brackets in Ruby mean?

In Ruby, what's the difference between {} and []? {} seems to be used for both code blocks and hashes. ... ? The documention isn't very clear. 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 - Which is the right one, nil or NULL, to mark "no Objective-C block"?

If I want to pass nothing for an Objective-C block, what keyword should I use, NULL or nil? I'm asking this ... . So I'm concerned about 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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syntax - What are the Java semantics of an escaped number in a character literal, e.g. '15' ?

Please explain what, exactly, happens when the following sections of code are executed: int a='15'; System.out. ... ); this prints out 64. 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 - Rails: Using greater than/less than with a where statement

I'm trying to find all Users with an id greater than 200, but I'm having some trouble with the specific ... have both failed. Any suggestions? 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 curly brace and square bracket in Python?

what is the difference between curly brace and square bracket in python? A ={1,2} B =[1,2] when I print ... B={} Is there any difference there? 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 - Ruby send vs __send__

I understand the concept of some_instance.send but I'm trying to figure out why you can call this both ways. ... have any idea about 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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syntax - How do you comment out code in PowerShell?

How do you comment out code in PowerShell (1.0 or 2.0)? See Question&Answers more detail:os...

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

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570 views

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syntax - How can I refer to a specific member of a Tuple of any size in F#

okay, this might be a silly question. So I have some tuples of size 4 so like (int,int,int,int) If it were ... the third element of a 4 tuple? 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 - How does --inventory option in Ansible work when it is given value with a trailing comma?

Man pages for ansible and ansible-playbook define -i option as: -i PATH, --inventory=PATH The PATH to the ... how does it relate to PATH? See Question&Answers more detail:os...

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

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571 views

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syntax - C# Object Initialiser - Reference to the new instance

Can I somehow get a reference to the instance I am creating using object initialiser var x = new TestClass { Id ... Is this possible in any 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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538 views

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syntax - Why doesn't the compiler report an error when a variable not declared as mutable is modified?

I installed Rust 1.13 and tried: fn main() { let x: u32; x = 10; // no error? } When I compiled this file ... shouldn't x = 10; cause an error? See Question&Answers more detail:os...

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

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572 views

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syntax - Is there any benefit of using null first in PHP?

Possible Duplicate: Why do some experienced programmers write comparisons with the value before the variable? I am ... I have overlooked? See Question&Answers more detail:os...

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

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666 views

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syntax error - "+=" causing SyntaxError in Python

n = 1 p = 4 print n += p gives me: File "p7.py", line 17 print n += p SyntaxError: invalid syntax How can this problem be fixed? See Question&Answers more detail:os...

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

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546 views

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syntax - How to catch invalid input in c++?

I am a (somewhat) experienced python programmer trying to migrate to C++. I want to be able to catch invalid ... if I have found an answer! See Question&Answers more detail:os...

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

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512 views

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syntax - What does the <TYPE> in java mean?

I have seen declarations, interfaces and classes that go TYPE<CLASS> What does this do/mean? See Question&Answers more detail:os...

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

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567 views

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syntax - How do I call a function name that is stored in a hash in Perl?

I'm sure this is covered in the documentation somewhere but I have been unable to find it... ... similar get_predicate_method_ref accessor. :( See Question&Answers more detail:os...

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

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628 views

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syntax - How to do variable assignment inside a while(expression) loop in Python?

I have the variable assignment in order to return the assigned value and compare that to an empty string, directly in ... to do this in Python? 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 highlighting - Sublime Text - C++ Highlight

How can i make my class be highlighted as a normal primitive type like the int or double? See a exemple: I want ... of the same way that int a. See Question&Answers more detail:os...

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

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642 views

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syntax - Swift make method parameter mutable?

How can I deal with this error without creating additional variable? func reduceToZero(x:Int) -> Int { while (x ... possible to do what I want? See Question&Answers more detail:os...

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

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598 views

1 answer

syntax - What does "return;" mean in javascript?

Ran over this code: if(!function1()) return; function2(); function3(array1[index1]); See Question&Answers more detail:os...

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

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625 views

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syntax - scala coalesces multiple function call parameters into a Tuple -- can this be disabled?

This is a troublesome violation of type safety in my project, so I'm looking for a way to disable it. It seems that ... ) } } Output: (foo,bar) 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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syntax - ASP.NET <%= %> vs <%: %>

It seems I am missing something. But ever since .Net 4.0 came out I have been seeing reference to < ... : Please provide reference or examples See Question&Answers more detail:os...

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

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854 views

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syntax - Mongodb dot notation wildcard?

I have a collection of users, each of which may be subscribed to one or more services. Each ... display/DOCS/Advanced+Queries#comment-346075854 See Question&Answers more detail:os...

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

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559 views

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syntax - What constitutes a "valid" C Identifier?

At @Zaibis suggestion (and related to my own answer to What are the valid characters for macro names?, as well as ... but who got cut? And 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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670 views

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syntax - OCaml explicit type signatures

In Haskell, it is considered good practice to explicitly declare the type signature of your functions, even ... different from 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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