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Is it safe to use -1 to set all bits to true?
...gn that int to the unsigned variable flags, you perform a value conversion from -2**31 (assuming a 32-bit int) to (-2**31 % 2**32) == 2**31, which is an integer with all bits but the first set to 1.
– David Stone
Dec 12 '12 at 1:53
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What's the best way to iterate over two or more containers simultaneously
...tation of zip is left as an exercise for the reader, but it follows easily from the implementation of indices.
(Before C++17 you’d have to write the following instead:)
for (auto items&& : zip(containerA, containerB))
get<0>(items) = get<1>(items);
...
What's the difference between using INDEX vs KEY in MySQL?
...
There's no difference. They are synonyms.
From the CREATE TABLE manual entry:
KEY is normally a synonym for INDEX. The key attribute PRIMARY KEY can
also be specified as just KEY when given in a column definition. This was
implemented for compatibility with o...
How to vertically align an image inside a div
...ative;
top: 50%;
transform: translateY(-50%);
This applies to anything.
From here.
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Rails I18n validation deprecation warning
...swer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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CFLAGS vs CPPFLAGS
... to imply, compilation in more complex projects is done in a separate step from preprocessing, will preprocessing succeed but compilation fail if CFLAGS doesn't add the same paths that CPPFLAGS added for the preprocessor? I guess I don't understand what the compiler does with include paths if the p...
Where is the syntax for TypeScript comments documented?
...unately, the JSDoc grammar is not rigorously specified but rather inferred from the behavior of a particular implementation. The majority of the standard JSDoc tags are preoccupied with providing type annotations for plain JavaScript, which is an irrelevant concern for a strongly-typed language such...
How do I vertically center UITextField Text?
...his takes into account the clear button being present.
override func awakeFromNib() {
contentVerticalAlignment = UIControlContentVerticalAlignment.Center
}
override func textRectForBounds(bounds: CGRect) -> CGRect {
let boundsWithClear = super.textRectForBounds(bounds)
let delta = C...
Escape quote in web.config connection string
...erver=dbsrv;User ID=myDbUser;Password=somepass&quot;word'
Update 3:
From MSDN (SqlConnection.ConnectionString Property):
To include values that contain a semicolon, single-quote character, or double-quote character, the value must be enclosed in double quotation marks. If the value contai...
In JavaScript, is returning out of a switch statement considered a better practice than using break?
...ements right now versus in the future. If you want to change your function from option one to option two, more refactoring will be needed.
However, given that within if/else statements it is best practice to do the following:
var foo = "bar";
if(foo == "bar") {
return 0;
}
else {
return 1...