大约有 40,000 项符合查询结果（耗时：0.0347秒） [XML]
MySQL query String contains
...
Quite simple actually:
mysql_query("
SELECT *
FROM `table`
WHERE `column` LIKE '%{$needle}%'
");
The % is a wildcard for any characters set (none, one or many). Do note that this can get slow on very large datasets so if your database grows you'll nee...
Accessing a Dictionary.Keys Key through a numeric index
...t;K, T> : IDictionary<K, T>
{
private IDictionary<K, T> _InnerDictionary;
public K LastInsertedKey { get; set; }
public MyDictionary()
{
_InnerDictionary = new Dictionary<K, T>();
}
#region Implementation of IDictionary
public void Add(Key...
What is the { get; set; } syntax in C#?
... a property with a backing field.
public class Genre
{
private string _name;
public string Name
{
get => _name;
set => _name = value;
}
}
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onCreateOptionsMenu inside Fragments
...nsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.menu_sample, menu);
super.onCreateOptionsMenu(menu,inflater);
}
And in onCreate add this line to make the options appear in your Toolbar
setHasOptionsMenu(true);
...
What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
...stdint.h> seems to be the proper way to ensure bitwidths using the int##_t types, though it's not yet part of the standard.]
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follow
...
Create a dictionary on a list with grouping
...vert it to a dictionary, as follows:
Dim qry = (From acs In ActualSales _
Group By acs.ProductID Into Group _
Select ProductID, Months = Group.ToDictionary(Function(c) c.Period) _
).ToDictionary(Function(c) c.ProductID)
The resulting query can be used as fo...
How do I format a date in Jinja2?
...and print) the strftime() method in your template, for example
{{ car.date_of_manufacture.strftime('%Y-%m-%d') }}
Another, sightly better approach would be to define your own filter, e.g.:
from flask import Flask
import babel
app = Flask(__name__)
@app.template_filter()
def format_datetime(val...
TypeError: 'NoneType' object is not iterable in Python
...r a variable containing None. The operation was performed by invoking the __iter__ method on the None.
None has no __iter__ method defined, so Python's virtual machine tells you what it sees: that NoneType has no __iter__ method.
This is why Python's duck-typing ideology is considered bad. The...
Advances social tools app with cool UI - Koded Apps - Kodular Community
...ash {
display: none;
}
// This script is inlined in `_discourse_splash.html.erb
const DELAY_TARGET = 2000;
const POLLING_INTERVAL = 50;
const splashSvgTemplate = document.querySelector(".splash-svg-template");
const splashTemplateClone = splashSvgTemplate.content.cloneNode(true...
How do you delete an ActiveRecord object?
...
It's destroy and destroy_all methods, like
user.destroy
User.find(15).destroy
User.destroy(15)
User.where(age: 20).destroy_all
User.destroy_all(age: 20)
Alternatively you can use delete and delete_all which won't enforce :before_destroy and :afte...