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What is the benefit of zerofill in MySQL?
...rkByers, Practically speaking though, wouldn't most client-libraries (e.g. PHP) simply strip the zeros off before they hand it over to the application code? If so, then it really seems somewhat pointless. A bad design in the early days of MySQL.
– Pacerier
May...
How to select last two characters of a string
...
You can pass a negative index to .slice(). That will indicate an offset from the end of the set.
var member = "my name is Mate";
var last2 = member.slice(-2);
alert(last2); // "te"
...
Add unique constraint to combination of two columns
... CONSTRAINT uq_yourtablename UNIQUE(column1, column2);
or
CREATE UNIQUE INDEX uq_yourtablename
ON dbo.yourtablename(column1, column2);
Of course, it can often be better to check for this violation first, before just letting SQL Server try to insert the row and returning an exception (exceptio...
Negative list index? [duplicate]
...bought That is solely because slice notation excludes the element with the index specified after the colon! -1 still refers to the last value in the list.
– xuiqzy
May 28 at 11:47
...
layer弹窗 绑定回车关闭事件 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... '我是内容'
,btn: ['确认','关闭']
,success: function(layero, index){
this.enterEsc = function(event){
if(event.keyCode === 13){
layer.close(index);
return false; //阻止系统默认回车事件
}
};
$(document).on('keydown', this.enterEsc...
nginx 基础配置全攻略，入门这一篇就够了！ - 更多技术 - 清泛网 - 专注C/C...
.../ssl/www.tsingfun.com.key; # key文件的路径
root /var/www/html;
index index.html index.htm;
location / {
proxy_pass http://127.0.0.1:8088;
index index.html index.htm index.jsp;
}
}
2、ssl配置：
# ssl证书地址
ssl_certificate /etc/nginx/ssl/www.tsingfun.com....
How do I split a string with multiple separators in javascript?
... }
return flatten(list);
}
traverseList = function(list, splitter, index) {
if(list[index]) {
if((list.constructor !== String) && (list[index].constructor === String))
(list[index] != list[index].split(splitter)) ? list[index] = list[index].split(splitter) : n...
String contains - ignore case [duplicate]
...You can use
org.apache.commons.lang3.StringUtils.containsIgnoreCase(CharSequence str,
CharSequence searchStr);
Checks if CharSequence contains a search CharSequence irrespective of
case, handling null. Case-insensitivity is defined as by
String.equalsIg...
How to make a great R reproducible example
...unction you are using. In general, all the code given there fulfills the requirements of a minimal reproducible example: data is provided, minimal code is provided, and everything is runnable. Also look at questions on Stack Overflow with lots of upvotes.
Producing a minimal dataset
For most cases...
How do I replace the *first instance* of a string in .NET?
...eplaceFirst(string text, string search, string replace)
{
int pos = text.IndexOf(search);
if (pos < 0)
{
return text;
}
return text.Substring(0, pos) + replace + text.Substring(pos + search.Length);
}
Example:
string str = "The brown brown fox jumps over the lazy dog";
str = Rep...