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XPath to select multiple tags
...operates on two Boolean values. The XPath union operator | operates on two sets of nodes. These are quite different and there are specific use cases for each of them. Using | can solve the original problem, but it results in a longer and more complex and challenging to understand XPath expression. T...
Why is `std::move` named `std::move`?
... like:
template <class T>
void
swap(T& a, T& b)
{
T tmp(set_value_category_to_xvalue(a));
a = set_value_category_to_xvalue(b);
b = set_value_category_to_xvalue(tmp);
}
And the question everyone should be asking themselves is if the above code is more or less readable tha...
When would you use .git/info/exclude instead of .gitignore to exclude files?
...n your computer (local, not shared with others).
3. actually requires to set a configuration on your computer :
git config --global core.excludesfile '~/.gitignore'
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Automatically add all files in a folder to a target using CMake?
...Foreach {$_.FullName.replace("${fp}\","").replace("\","/")}
$CMakeExpr = "set(SOURCES "
foreach($file in $files){
$CMakeExpr+= """$file"" " ;
}
$CMakeExpr+=")"
return $CMakeExpr;
Suppose you have a folder with this structure
C:\Workspace\A
--a.cpp
C:\Workspace\B
--b.cpp
Now save this f...
Purpose of ESI & EDI registers?
...ns for repeated (= mass) storing, loading and scanning. What you do is you set up SI and/or DI to point at one or both operands, perhaps put a count in CX and then let 'er rip. These are operations that work on a bunch of bytes at a time, and they kind of put the CPU in automatic. Because you're not...
Git: Merge a Remote branch locally
...etch.
Note 2: These commands also work with other remote repos so you can setup an origin and an upstream if you are working on a fork.
Opposite scenario: If you want to merge one of your local branch on a remote branch (as opposed to a remote branch to a local one, as shown above), you need to ...
'const string' vs. 'static readonly string' in C#
...d using other constants or literals.
Also, a static readonly string can be set in a static constructor; a const string can only be initialized inline.
Note that a static string can be modified; you should use static readonly instead.
...
Why is an int in OCaml only 31 bits?
...irst need to perform integer arithmetic on the first pointer to add the offset into the object to it where the integer data is stored. Then you have to dereference that address. Do the same again with the second integer. Now you have two integers you can actually ask the CPU to add. Of course, you n...
Preventing scroll bars from being hidden for MacOS trackpad users in WebKit/Blink
...-elements [blog]. You can disable the default appearance and behaviour by setting -webkit-appearance [docs] to none.
Because you're removing the default style, you'll also need to specify the style yourself or the scroll bar will never show up. The following CSS recreates the appearance of the hi...
How to read a single character from the user?
... import sys, tty, termios
fd = sys.stdin.fileno()
old_settings = termios.tcgetattr(fd)
try:
tty.setraw(sys.stdin.fileno())
ch = sys.stdin.read(1)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
return ch...