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Delete files or folder recursively on Windows CMD
... /q *.svn
/q disables Yes/No prompting
/s means delete the file(s) from all subdirectories.
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Should enums in C# have their own file? [closed]
..." (how much does an extra file cost?), but it is often inconventient. Usually there's one class that's most closely associtated with the enum, and I put them in the same file.
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What is an “unwrapped value” in Swift?
...st, you have to understand what an Optional type is. An optional type basically means that the variable can be nil.
Example:
var canBeNil : Int? = 4
canBeNil = nil
The question mark indicates the fact that canBeNil can be nil.
This would not work:
var cantBeNil : Int = 4
cantBeNil = nil // can...
When should I use Arrow functions in ECMAScript 6?
...
A while ago our team migrated all its code (a mid-sized AngularJS app) to JavaScript compiled using Traceur Babel. I'm now using the following rule of thumb for functions in ES6 and beyond:
Use function in the global scope and for Object.prototype prope...
Window Features - 更多技术 - 清泛网 - 专注C/C++及内核技术
... buttons, and scroll bars. An overlapped window used as a main window typically includes all of these components.
By specifying the WS_OVERLAPPED or WS_OVERLAPPEDWINDOW style in the CreateWindowEx function, an application creates an overlapped window. If you use the WS_OVERLAPPED style, the window ...
Is it better to use C void arguments “void foo(void)” or not “void foo()”? [duplicate]
...either the count is communicated nor the types of what is needed - as with all function declarations that use identifier lists. So the caller has to know the types and the count precisely before-hand. So if the caller calls the function giving it some argument, the behavior is undefined. The stack c...
How to validate an email address in JavaScript
...b"@gmail.com, _@gmail.com, 1@gmail.com , 1_example@something.gmail.com are all valid, but Gmail will never allow any of these email addresses. You should do this by accepting the email address and sending an email message to that email address, with a code/link the user must visit to confirm validit...
Are the days of passing const std::string & as a parameter over?
...he said is because of cases like this.
Let's say I have function A which calls function B, which calls function C. And A passes a string through B and into C. A does not know or care about C; all A knows about is B. That is, C is an implementation detail of B.
Let's say that A is defined as follow...
How can I remove a trailing newline?
...; 'test string\n'.rstrip()
'test string'
Python's rstrip() method strips all kinds of trailing whitespace by default, not just one newline as Perl does with chomp.
>>> 'test string \n \r\n\n\r \n\n'.rstrip()
'test string'
To strip only newlines:
>>> 'test string \n \r\n\n\r \...
Java Synchronized Block for .class
What does this java code mean? Will it gain lock on all objects of MyClass ?
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