1. The stupidest Wayfunction get () { var s = 22.127456 + ""; var str = s.substring (0,s.indexof (".") + 3); alert (str);}2. Regular expression effect is good3. He is more clever ...4.js Reserved 2 decimal places (mandatory)For the number
This article was reproduced from: http://blog.csdn.net/hanmengaidudu/article/details/17099755First, use the text view modeThe following "Hair" refers to the command I knocked, "collect" refers to the information displayed after carriage return
The return value of Integer.bitcount (i) in Java is the number of 1 in the binary representation of I. The source code is as follows:public static int Bitcount (int. i) { //HD, figure 5-2 i = i-((i >>> 1) & 0x55555555); i = (I &
Bitwise MOVE Operators:Example: 3 1) Convert 3 to binary number 0000 0000 0000 0000 0000 0000 0000 0011,2) Move the digit high (left) to two 0, and the other numbers are shifted to the left by 2 bits,3) Two vacancies in the low (right) 0. The
C language has the features of high-level language and low-level language.The so-called bitwise operation refers to the operation of bits.Bit operations provided by the C language:operator meaning& Bitwise AND| Bitwise OR∧ Bitwise XOR OR∽ Reverse>>
The Java backend retains two decimal places1. (double) (Math.Round (sd3*10000)/10000.0);this keeps the 4-bit( Double) (Math.Round (sd3*100)/100.0);this keeps the 2 bits.2. Another approachimport Java.text.DecimalFormat;DecimalFormat df2 = new
Text: Step by step Write algorithm (the string to find the next article)"Disclaimer: Copyright, welcome reprint, please do not use for commercial purposes. Contact mailbox: feixiaoxing @163.com "We talked about the KMP algorithm earlier, but it's
1. IntroductionLocating a small substring in a large string is called a pattern match of a string, which should be considered one of the most important operations in a string. The KMP itself is not complicated, but most of the articles on the
A suffix array is a powerful tool for working with strings. ———— Ro
• The previous statement In the suffix tree, suffix automaton, and suffix array three of the indefinitely choice, the combination of code and practicality considerations, you
Variable
Number Type
Operator
Process Control
While loop
Dead loop
Continue vs Break
While else
Variable (varibles)The role of variables:
Variables are used to store information so that subsequent code calls
Here are two versions of the function of the source code and a simple test, and finally I will give a more practical string intercept function. It should be noted that the string interception problem discussed here is the Chinese character string
When I first learned Java, I had this suspicion, but has not been validated; recently in Oschina to see someone in answer to the question also said so, and began a look at the idea of the--java.lang.object.hashcode () return value is not the object
"= =" in object, Equal,hashcode ()
= = In the objectFor the base data type, the "= =" Comparison value is the same. For reference data types, "= =" compares the stored addresses in memory for the same.
equals in Object ()
public boolean equals
1, first say Ubuntu (PAE) principle, the following say how to open PAE and some need to pay attention to place
By increasing the number of pins from 32 to 36 on the processor to increase the processor's addressing capability to reach 2^36=64GB,
4.4 kd-Tree Accelerator
The two-dimensional partition (Binary space partitioning, BSP) tree adaptively divides the space into regions of varying sizes. Compared with homogeneous grids, BSP is a more efficient data structure for scenes with uneven
The night before last I played with the bag for a whole night, just started (first time with the bag) tell me what I found all night.
I was directly intercepted by WPE, because the Golden Hill game itself has interception package protection measures
When people use a computer, sometimes because of abnormal operation, sometimes because of virus attack, can cause a partition to disappear or hard drive cannot start. The reason is that the hard disk partition table is damaged. The hard disk
Summary:Use round SQL functions to round-up numeric data, as described belowLab environment: SQL Server 2008Transferred from: http://www.maomao365.com/?p=6454
Recently received the user needs, to the numerical data, no matter how much behind
The TS package consists of the following 3 parts:
Baotou: 4 bytes, synchronization, identification, error detection and encryption
Self-adapting domain: Optional
Package data: Maximum 184 bytes (no adaptive domain exists)
4 bytes
184
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