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What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
...t more portable, but also increases the risk that the wrong interpreter is selected because it searches for a match in every directory on the executable search path. It also suffers from the same problem in that the path to the env binary may also be different on a per-machine basis."-Wikipedia
...
Visual Studio 2012 - Intellisense sometimes disappearing / broken
...
I have the same problem. For me, selecting the end of the very last line of the file, and then saving the file (ctrl-s) fixes the problem.
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Object-orientation in C
...ject at runtime! You just reassign it a new vtable pointer. You can even selectively change some of the virtual functions while keeping others, creating new hybrid types. Just be careful to create a new vtable instead of modifying the global vtable, otherwise you'll accidentally affect all object...
Difference between array_map, array_walk and array_filter
...ap(function ($a, $b) { return $a * $b; }, $origarray1, $origarray2)
);
// select only elements that are > 2.5
print_r(
array_filter($origarray1, function ($a) { return $a > 2.5; })
);
?>
</pre>
Result:
Array
(
[0] => 2
[1] => 2
[2] => 3
)
Array
(
[0] ...
Detect changed input text box
...unction(e){
alert('Changed!')
});
In pure JavaScript:
document.querySelector("input").addEventListener("change",function () {
alert("Input Changed");
})
Or like this:
<input id="inputDatabaseName" onchange="youFunction();"
onkeyup="this.onchange();" onpaste="this.onchange();" oninput=...
How to reliably guess the encoding between MacRoman, CP1252, Latin1, UTF-8, and ASCII
...e given language, ignoring the punctuation characters, and based on a wide selection of documents in that language.
As others have remarked, you really only have the high-bit-set punctuation characters available to distinguish between cp1252 and macroman. I'd suggest training a Mozilla-type model o...
How can I change an element's class with JavaScript?
... supported.
Simple cross-browser solution
The standard JavaScript way to select an element is using document.getElementById("Id"), which is what the following examples use - you can of course obtain elements in other ways, and in the right situation may simply use this instead - however, going int...
MongoDB Many-to-Many Association
...ey use their own N1QL. This is an example of a JOIN from their tutorials:
SELECT usr.personal_details, orders
FROM users_with_orders usr
USE KEYS "Elinor_33313792"
JOIN orders_with_users orders
ON KEYS ARRAY s.order_id FOR s IN usr.shipped...
“Auth Failed” error with EGit and GitHub
...
I resolved it by selecting http as the protocol and giving my GitHub username and password.
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How to implement a rule engine?
..."Contains", "C#" )
};
// compile the rules once
var compiledRules = rules.Select(r => CompileRule(r)).ToList();
public bool MatchesAllRules(User user)
{
return compiledRules.All(rule => rule(user));
}
Here is the implementation of BuildExpr:
Expression BuildExpr(Rule r, ParameterExpress...