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What breaking changes are introduced in C++11?
...bc"
const char *s = u8"def"; // Previously "abcdef", now "def"
#define _x "there"
"hello"_x // now a user-defined-string-literal. Previously, expanded _x .
New keywords: alignas, alignof, char16_t, char32_t, constexpr, decltype, noexcept, nullptr, static_assert, and thread_local
Ce...
Scala: Nil vs List()
...llo", 2 -> "world").foldLeft(List[String]())( (acc, el) => acc :+ el._2) res1: List[String] = List(hello, world) Using Nil as the accumulator here wouldn't work.
– Kevin Meredith
Nov 17 '13 at 4:57
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How get integer value from a enum in Rails?
...t the integer values for an enum from the class the enum is on:
Model.sale_infos # Pluralized version of the enum attribute name
That returns a hash like:
{ "plan_1" => 1, "plan_2" => 2 ... }
You can then use the sale_info value from an instance of the Model class to access the integer v...
Best way to test for a variable's existence in PHP; isset() is clearly broken
...variable you are checking would be in the global scope you could do:
array_key_exists('v', $GLOBALS)
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How do I set the figure title and axes labels font size in Matplotlib?
... @AlexanderMcFarlane. I ran python -c 'import matplotlib as mpl; print(mpl.__version__); print("figure.titlesize" in mpl.rcParams.keys())'. Result is 1.5.1, True. 1) What version of matplotlib are you using? What version of Python? 2) Could it be a bug where for some reason it accepts str but not un...
Access-control-allow-origin with multiple domains
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@Simon_Weaver there is a * value that allows any origin to access the resource. However the original question was asking about whitelisting a set of domains.
– monsur
Apr 29 '15 at 2:15
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Using `textField:shouldChangeCharactersInRange:`, how do I get the text including the current typed
...the accepted answer, the following should work in Swift 3:
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
let newString = NSString(string: textField.text!).replacingCharacters(in: range, with: string)
return...
XAMPP, Apache - Error: Apache shutdown unexpectedly
...The solution ended up being (stackoverflow.com/questions/14548768/… setup_xampp.bat to refresh the paths]
– Timmah
Feb 7 '15 at 1:35
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LINQ - Full Outer Join
...roper Expression<Func<>>. I supposed I could replace them with _, __, ___ instead, but that doesn't seem any clearer until C# has a proper parameter wildcard to use instead.
– NetMage
Jul 7 '17 at 23:23
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Pagination in a REST web application
... Range header also works to declare an order:
Range: products-by-date=2009_03_27-
to get all products newer than that date or
Range: products-by-date=0-2009_11_30
to get all products older than that date. '0' is probably not best solution, but RFC seems to want something for range start. There...