大约有 25,300 项符合查询结果（耗时：0.0594秒） [XML]
Split a List into smaller lists of N size
... i)));
}
return list;
}
Generic version:
public static IEnumerable<List<T>> SplitList<T>(List<T> locations, int nSize=30)
{
for (int i = 0; i < locations.Count; i += nSize)
{
yield return locations.GetRange(i, Math.Min(nSize, loc...
.gitignore for PhoneGap/Cordova 3.0 projects - what should I commit?
...
Shameless plug for my Cordova gitignore: gist.github.com/elliot-labs/c92b3e52053906816074170ada511962
– Elliot Labs LLC
Jun 19 at 2:21
...
#1071 - Specified key was too long; max key length is 1000 bytes
...er column as you define the index. For example:
...
KEY `index` (`parent_menu_id`,`menu_link`(50),`plugin`(50),`alias`(50))
...
But what's the best prefix length for a given column? Here's a method to find out:
SELECT
ROUND(SUM(LENGTH(`menu_link`)<10)*100/COUNT(`menu_link`),2) AS pct_lengt...
Best XML Parser for PHP [duplicate]
... an extension, written in C, and is very fast. But second, the parsed document takes the form of a PHP object. So you can "query" like $root->myElement.
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How to set a default value for a datetime column to record creation time in a migration?
...::Migration[5.0]
def change
create_table :posts do |t|
t.datetime :modified_at, default: -> { 'CURRENT_TIMESTAMP' }
t.timestamps
end
end
end
See discussion at https://github.com/rails/rails/issues/27077 and answer there by prathamesh-sonpatki
...
Keep file in a Git repo, but don't track changes
...want to be tracked and use the following command:
git update-index --assume-unchanged FILE_NAME
and if you want to track the changes again use this command:
git update-index --no-assume-unchanged FILE_NAME
git-update-index documentation
...
Direct casting vs 'as' operator?
...- it's simple and straightforward. I tend to almost never use 2 since if something is not the right type, I usually expect an exception to occur. I have only seen a need for this return-null type of functionality with badly designed libraries which use error codes (e.g. return null = error, instead ...
How to identify server IP address in PHP
...
No. On some shared hosts this returns ::1
– TheRealChx101
Aug 2 '14 at 6:18
3
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Skip certain tables with mysqldump
...ou can use the --ignore-table option. So you could do
mysqldump -u USERNAME -pPASSWORD DATABASE --ignore-table=DATABASE.table1 > database.sql
There is no whitespace after -p (this is not a typo).
If you want to ignore multiple tables you can use a simple script like this
#!/bin/bash
PASSWOR...
What is Model in ModelAndView from Spring MVC?
...h of properties.
Example 1
If you have...
return new ModelAndView("welcomePage","WelcomeMessage","Welcome!");
... then in your jsp, to display the message, you will do:-
Hello Stranger! ${WelcomeMessage} // displays Hello Stranger! Welcome!
Example 2
If you have...
MyBean bean = new MyBean...