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RegEx for Javascript to allow only alphanumeric
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/^[a-z0-9]+$/i
^ Start of string
[a-z0-9] a or b or c or ... z or 0 or 1 or ... 9
+ one or more times (change to * to allow empty string)
$ end of string
/i case-insensitive
Update (supporting ...
How to center align the cells of a UICollectionView?
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80
I think you can achieve the single line look by implementing something like this:
- (UIEdgeInse...
Angular.js ng-repeat across multiple tr's
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edited May 23 '17 at 12:10
Community♦
111 silver badge
answered Oct 19 '12 at 20:19
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Reverse Range in Swift
...:to:by:) is similar but excludes the last value
for i in stride(from:5,to:0,by:-1) { print(i) } // 5 4 3 2 1
Update For latest Swift 2
First of all, protocol extensions change how reverse is used:
for i in (1...5).reverse() { print(i) } // 5 4 3 2 1
Stride has been reworked in Xcode 7 Beta 6. ...
CentOS+Nginx+PHP+MySQL详细配置(图解) - 更多技术 - 清泛网 - 专注C/C++及内核技术
...贴出来，就不做过多的讲解了
#useradd mysql
#tar zxvf mysql-5.0.40.tar.gz
#cd mysql-5.0.40
#./configure --prefix=/usr/local/mysql
#make && make install
#/usr/local/mysql/bin/mysql_install_db --user=mysql //初始化MySQL数据库
#chown -R mysql /usr/local/mysql/var
#/usr...
How to remove space between axis & area-plot in ggplot2?
... to expand the scale by 5% on each side for
continuous variables, and by 0.6 units on each side for discrete
variables.
The problem is thus solved by adding expand = c(0,0) to scale_x_continuous and scale_y_continuous. This also removes the need for adding the panel.margin parameter.
The code...
Boolean Field in Oracle
...as JDBC, OCCI, and other programming environments,
it's better to select 0 for false and 1 for true so it can work
correctly with the getBoolean and setBoolean functions.
Basically they advocate method number 2, for efficiency's sake, using
values of 0/1 (because of interoperability with JD...
What is q=0.5 in Accept* HTTP headers?
...y factor. It specifies what language the user would prefer, on a scale of 0 to 1, as can be seen from the HTTP/1.1 Specification, §14.4:
Each language-range MAY be given an associated quality value which represents an estimate of the user's preference for the languages specified by that range. Th...
What does `void 0` mean? [duplicate]
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1024
What does void 0 mean?
void[MDN] is a prefix keyword that takes one argument and always retur...
Programmatically create a UIView with color gradient
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702
Objective-C:
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 50)];
CAGradie...