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Generate a random alphanumeric string in Cocoa
... genRandStringLength should just return randomString. There's no reason to alloc and init (and not autorelease!) a whole new string.
– kevingessner
Apr 14 '10 at 0:49
5
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How disable Copy, Cut, Select, Select All in UITextView
...
This was the best working solution for me:
UIView *overlay = [[UIView alloc] init];
[overlay setFrame:CGRectMake(0, 0, myTextView.contentSize.width, myTextView.contentSize.height)];
[myTextView addSubview:overlay];
[overlay release];
from: https://stackoverflow.com/a/5704584/1293949
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How to make an AJAX call without jQuery?
...ippet you can do similar things pretty easily, like this:
ajax.get('/test.php', {foo: 'bar'}, function() {});
Here is the snippet:
var ajax = {};
ajax.x = function () {
if (typeof XMLHttpRequest !== 'undefined') {
return new XMLHttpRequest();
}
var versions = [
"MSXML...
程序员才能听得懂的笑话 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...这个论坛的人都吵起来,我今晚就跟你走. 某软件工程师:PHP是最好的语言! 某论坛炸锅了,各种吵架... 某女:服了你了,我们走吧 你想干啥都行. 某软件工程师:今天不行,我一定要说服他们,PHP必须是最好的语言 某女：....
50、《c++程...
Node.js quick file server (static files over HTTP)
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And on PHP: php -S localhost:8000
– dennis
Apr 11 '17 at 17:03
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How do I quickly rename a MySQL database (change schema name)?
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I think the solution is simpler and was suggested by some developers. phpMyAdmin has an operation for this.
From phpMyAdmin, select the database you want to select. In the tabs there's one called Operations, go to the rename section. That's all.
It does, as many suggested, create a new databa...
How to import an excel file in to a MySQL database
...s. Here is a recent example I used to import a csv file named test.csv.
phpMyAdmin: Select your database first, then select the Import tab. phpMyAdmin will automatically create your table and size your VARCHAR fields, but it won't optimize the field types. phpMyAdmin has trouble importing large...
Maximum size of an Array in Javascript
...a big deal
x=3e7 takes 1300ms, which is pretty bad
x=4e7 takes 11000ms and allocates an extra 2.5GB of memory
So around 30 million elements is a hard upper limit, because the javascript VM falls off a cliff at 40 million elements and will probably crash the process.
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How to convert a string into double and vice versa?
...separators, also.
NSNumberFormatter * myNumFormatter = [[NSNumberFormatter alloc] init];
[myNumFormatter setLocale:[NSLocale currentLocale]]; // happen by default?
[myNumFormatter setFormatterBehavior:NSNumberFormatterBehavior10_4];
// next line is very important!
[myNumFormatter setNumberStyle...
The most sophisticated way for creating comma-separated Strings from a Collection/Array/List?
...ode.
The StringBuilder class can be seen as a mutable String object which allocates more memory when its content is altered.
The original suggestion in the question can be written even more clearly and efficiently, by taking care of the redundant trailing comma:
StringBuilder result = new Str...