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Direct casting vs 'as' operator?
...n explicitly defined, e.g.: int? i; string s = "5"; i = s as int; // i is now 5 s = null; i = s as int; // i is now null
– Anheledir
Sep 25 '08 at 10:41
3
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How to dismiss keyboard for UITextView with return key?
...e reason to use UITextView is that it can hold text in multiple lines. And now I'm using it as a message box.
– Chilly Zhong
Apr 1 '09 at 6:12
28
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Enable Vim Syntax Highlighting By Default
I know how to turn syntax highlighting on and off in vim by running this in the editor:
6 Answers
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sed one-liner to convert all uppercase to lowercase?
...oned, BSD sed doesn't support it). Try reading the top line of man sed to know which version you're using.
– Ryder
Dec 8 '17 at 10:48
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Escaping single quote in PHP when inserting into MySQL [duplicate]
...y is likely because you have magic_quotes_gpc turned on (which you should know is a bad idea). This means that strings gathered from $_GET, $_POST and $_COOKIES are escaped for you (i.e., "O'Brien" -> "O\'Brien").
Once you store the data, and subsequently retrieve it again, the string you get b...
Difference between case object and object
...between a standard Scala object and a case object is explained by what we know about the difference between standard classes and case classes. This answer doesn't even address the wording of the question.
– itsbruce
Jan 31 '17 at 13:50
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How does the const constructor actually work?
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compile-time constant values: Objects where the all field values are
known already at compile time, without executing any statements.
That puts some restrictions on the class and constructor. A const
constructor can't have a body (no statements executed!) and its class
must not have an...
Targeting position:sticky elements that are currently in a 'stuck' state
position: sticky works on some mobile browsers now, so you can make a menu bar scroll with the page but then stick to the top of the viewport whenever the user scrolls past it.
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How do I get the entity that represents the current user in Symfony2?
I am using the Symfony security setup. Everything works fine, but I don't know how to do one important thing:
6 Answers
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Handling optional parameters in javascript
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You can know how many arguments were passed to your function and you can check if your second argument is a function or not:
function getData (id, parameters, callback) {
if (arguments.length == 2) { // if only two arguments were s...