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How do I shuffle an array in Swift?
How do I randomize or shuffle the elements within an array in Swift? For example, if my array consists of 52 playing cards, I want to shuffle the array in order to shuffle the deck.
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Is String.Format as efficient as StringBuilder
...would run more quickly using .Append(). But it's a guess, try benchmarking and/or profiling the two to get a proper comparison.
This chap, Jerry Dixon, did some benchmarking:
http://jdixon.dotnetdevelopersjournal.com/string_concatenation_stringbuilder_and_stringformat.htm
Updated:
Sadly the ...
How can I update a single row in a ListView?
...ave a ListView which displays news items. They contain an image, a title and some text. The image is loaded in a separate thread (with a queue and all) and when the image is downloaded, I now call notifyDataSetChanged() on the list adapter to update the image. This works, but getView() is gett...
How do I access call log for android?
... of Jellybean (4.1) you need the following permission:
<uses-permission android:name="android.permission.READ_CALL_LOG" />
Code:
Uri allCalls = Uri.parse("content://call_log/calls");
Cursor c = managedQuery(allCalls, null, null, null, null);
String num= c.getString(c.getColumnIndex(CallLo...
【精心整理】【实用】visual C++中最常用的类与API函数 - C/C++ - 清泛网 -...
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CPen类：封装了Windows图形设备接口(GDI)中的画笔对象
CPoint类：操作CPoint和POINT结构
CRect类：封装了一个矩形区域及相关操作
CRgn类：封装用于操作窗口中的椭圆、多边形或者不规则区域的GDI区域
CSize类：用于表示相对坐标...
How to simplify a null-safe compareTo() implementation?
...od for a simple class such as this (to be able to use Collections.sort() and other goodies offered by the Java platform):
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How to combine date from one field with time from another field - MS SQL Server
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This saved me! I was converting both to chars and then concating and then back to DATETIME, but then I couldn't index it, because SQL said it was non-deterministic. This apparently IS deterministic!!! THANK !!! YOU !!!
– eid...
Where do I find the definition of size_t?
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From Wikipedia
The stdlib.h and stddef.h header files define a datatype called size_t1 which is used to represent the size of an object. Library functions that take sizes expect them to be of type size_t, and the sizeof operator evaluates to size_t.
The...
Shell Script — Get all files modified after
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Converting an arbitrary timestamp into a fractional, relative amount of time seems neither correct nor particularly convenient. The solution below using -newermt is much nicer.
– Bobby Jack
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appending array to FormData and send via AJAX
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You have several options:
Convert it to a JSON string, then parse it in PHP (recommended)
JS
var json_arr = JSON.stringify(arr);
PHP
$arr = json_decode($_POST['arr']);
Or use @Curios's method
Sending an array via FormData.
Not recommended: Seriali...