Public byte[] Tupian () Gets a picture of a byte array{FileStream fs = new FileStream (@ "G:\smartrt\bin\Debug\Data\tpl\111.jpg", FileMode.Open);int filelength = 0;filelength= (int) fs. Length; Get file lengthbyte[] fl = new Byte[filelength]; Create
1,join----------Arrays into strings
var arr=[1,2,3];
Arr.join ("_"); ' 1_2_3 '
2,reverse----Array in reverse order (array modified)
var arr=[1,2,3];
Arr.reverse (); [3,2,1]
Arr [3,2,1]
MongoDB samus Driver (2), mongodbsamus driver
The driver connection method mentioned in the previous article. This article provides the complete link code and instance
Complete database link
1 static IMongo _ mongo = null; 2 public writable drive ()
Title Description: http://ac.jobdu.com/problem.php?pid=1348In the array of two digits, if the previous number is greater than the number that follows, then these two numbers form an inverse pair. Enter an array to find the total number of reverse
This article mainly summarizes the array methods of javascript in detail, including the most commonly used array methods and extension methods. If you are interested, please refer to them.
I. Common Methods of Arrays
1: join ();
Convert the array
Attributes for Merge sortTime Complexity O (n log n) spatial complexity O (n) Stability stability inventor John von Neumann (who is the computer von Neumann system)Merge sort is an effective sorting algorithm based on merging operation, which is a
2.3Array features of jquery objects
From the above section, we can see that jquery builds a function to complete the search, conversion, or other functions. The result is to find the elements, search, and search, which is just a way. You have to
Merging arrays
The Array_merge () function merges the arrays together to return an array of unions. The resulting array starts with the first input array parameter, forcing it sequentially in the order in which the array parameters appear later.
In foreach, the number of circular query data code is relatively small, but the performance is relatively low, the better solution is to collect the ID, use in a one-time query, but this raises the data structure is not our own function with PHP can
Array loop output
$ A = M ('A'); // read data from database a table (array) $ B = M ('B '); // read data from table A (array) foreach ($ a as $ k = >$ v) {echo $ v ;} foreach ($ B as $ kk =>$ vv) {echo $ vv;} // note: the code is only for better
PHP Merge 2 numeric key array values of the program
In PHP, the array_merge is the most reliable function, the following we use the Array_merge function when merging is mainly for the two array of key values for the processing of numbers.
To
The simplest array merge we just use Array_merge to
Array_merge () Merges the cells of two or more arrays, and the values in one array are appended to the previous array. Returns an array as the result.
When the array key name is a numeric key name,
PHP learning notes array definition
1. no index method
$ List = array ("test", "test1", "test2", "test3 ");
The default index of the array defined by this method starts from 0.
2. indexed
$ List = array (1 => "test ",
2 => "test1 ",
3 =>
JavaScript simulated array merging concat and javascriptconcat
Definition and usage
The concat () method is used to connect two or more arrays.
This method does not change the existing array, but only returns a copy of the connected
The basic method for merging arrays in JavaScript is described.
Here are two simple methods:First
var mergeTo = [4,5,6], mergeFrom = [7,8,9]; mergeTo = mergeTo.concat(mergeFrom); mergeTo; // is: [4, 5, 6, 7, 8, 9]
Or
var a = [1,2], b = [3,4], c
PHP array Functions
This article mainly introduces PHP array functions and summarizes the related arrays in php. It has some reference value. For more information, see
This article summarizes functions related to PHP arrays. Share it with you
Preface
Keywords: farmer's uncle, ext. Is, copyto, flatten, unique, pluck, invoke, format, grid, array, function, learning, notes, summary, Skills
Extjs has not been used for a long time and has taken many detours. Because extjs will not be used for
Document directory
1:
2:
An array object uses a separate variable name to store a series of values.Instance
Create an array
Create an array, assign values to it, and then output these values.
For... in statement
Use
We don't have much PHP information on hand. Do you have a copy of php4gb. chm. I like the function library in it most, and it provides online help. However, PHP is developing too fast. You know, I recently found some extended array functions at
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