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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
... in Reflector, you'll see it:
// while looping through the parameters
strArray[i] = (str == null) ? Empty : str;
// then concatenate that string array
(MSDN mentions it, too: http://msdn.microsoft.com/en-us/library/k9c94ey1.aspx)
On the other hand, ToString() is an instance method, which you ...
SQL - Update multiple records in one query
...ope this helps someone else.
function _bulk_sql_update_query($table, $array)
{
/*
* Example:
INSERT INTO mytable (id, a, b, c)
VALUES (1, 'a1', 'b1', 'c1'),
(2, 'a2', 'b2', 'c2'),
(3, 'a3', 'b3', 'c3'),
(4, 'a4', 'b4', 'c4'),
...
Remove leading comma from a string
...re looking for though because you will still need to split it to create an array with it. Maybe something like:
var myString = myOriginalString.substring(1);
var myArray = myString.split(',');
Keep in mind, the ' character will be a part of each string in the split here.
...
What is the purpose of “!” and “?” at the end of method names?
...re's no need for a distinction, and you shouldn't name it with a bang. See Array#clear, for example. It clears the array. Clearing the array naturally mutates it. There's nothing surprising about that, the name already makes it clear, therefore: no bang. See ruby-forum.com/topic/176830#773946 .
...
Get class name of object as string in Swift
...cribing: type(of: object))). Where object can be an instance variable like array, a dictionary, an Int, a NSDate, etc.
Because NSObject is the root class of most Objective-C class hierarchies, you could try to make an extension for NSObject to get the class name of every subclass of NSObject. Like ...
Saving enum from select in Rails 4.1
...ine.colors.to_a.map { |w| [w[0].humanize, w[0]] } because w represented an array. Not sure why, but maybe this will help someone.
– jakealbaugh
Jun 28 '15 at 1:09
...
Bytes of a string in Java
...use to turn it into bytes.
That said, you can turn the string into a byte array and then look at its size as follows:
// The input string for this test
final String string = "Hello World";
// Check length, in characters
System.out.println(string.length()); // prints "11"
// Check encoded sizes
f...
Why is January month 0 in Java Calendar?
... which is in favour of using 0-based indexes is that it makes things like "arrays of names" easier:
// I "know" there are 12 months
String[] monthNames = new String[12]; // and populate...
String name = monthNames[calendar.get(Calendar.MONTH)];
Of course, this fails as soon as you get a calendar ...
tinyxml XML解析库下载（tinyxml2.h 和 tinyxml2.cpp） - 源码下载 - 清泛...
...一个 cpp，绿色小巧，直接加入工程源码编译，跨平台。使用方法参见《C++ 读写xml方法整理（持续更新）》tinyxml2 h *O C++编写的，一个.h，一个.cpp，绿色小巧，直接加入工程源码编译，跨平台。
使用方法参见《C++ 读写xml方法整...
How to store a command in a variable in a shell script?
...t a command in a variable, but the complex cases always fail.
Put it in an array and expand all the words with double-quotes "${arr[@]}" to not let the IFS split the words due to Word Splitting.
cmdArgs=()
cmdArgs=('date' '+%H:%M:%S')
and see the contents of the array inside. The declare -p allows ...