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Is there an expression for an infinite generator?
...te itertools.count: count = lambda start=0, step=1: (start + i*step for i, _ in enumerate(iter(int, 1)))
– Coffee_Table
Aug 13 '18 at 23:43
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Restore the state of std::cout after manipulating it
...ppet:
void printHex(std::ostream& x) {
boost::io::ios_flags_saver ifs(x);
x << std::hex << 123;
}
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Replace only some groups with Regex
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A good idea could be to encapsulate everything inside groups, no matter if need to identify them or not. That way you can use them in your replacement string. For example:
var pattern = @"(-)(\d+)(-)";
var replaced = Regex.Replace(text, pattern, "$1AA$3");
or using a MatchEvaluator:
var repl...
How to add Web API to an existing ASP.NET MVC 4 Web Application project?
...t I need a controller deriving from ApiController, but that's about all I know.
9 Answers
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How to delay the .keyup() handler until the user stops typing?
I’ve got a search field. Right now it searches for every keyup. So if someone types “Windows”, it will make a search with AJAX for every keyup: “W”, “Wi”, “Win”, “Wind”, “Windo”, “Window”, “Windows”.
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Local variables in nested functions
...free' variables (not defined in the function itself by assignment), are verified, then bound as closure cells to the function, with the code using an index to reference each cell. pet_function thus has one free variable (cage) which is then referenced via a closure cell, index 0. The closure itself ...
Is there a way to make R beep/play a sound at the end of a script?
...mething else on a different desktop. If I don't check frequently, I never know when something is finished. Is there a way to invoke a beep (like a system beep) or get R to play a sound or notify growl via some code at the end of my script?
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How do I get a TextBox to only accept numeric input in WPF?
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Please let me know how to use it when declares in some other STATIC class and apply to textbox?
– SHEKHAR SHETE
Jun 28 '13 at 7:41
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Convert XML to JSON (and back) using Javascript
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I found that if you start from json-xml-json, this library works well, but if you want xml-json-xml there is a problem with reversibility since it adds metadata xml elements like <o> and <e>
– vishr
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How to remove the hash from window.location (URL) with JavaScript without page refresh?
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Solving this problem is much more within reach nowadays. The HTML5 History API allows us to manipulate the location bar to display any URL within the current domain.
function removeHash () {
history.pushState("", document.title, window.location.pathname
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