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MySQL ON vs USING?
... just say film_id since that would make for an ambiguity:
ERROR 1052 (23000): Column 'film_id' in field list is ambiguous
As for select *, the joining column appears in the result set twice with ON while it appears only once with USING:
mysql> create table t(i int);insert t select 1;creat...
Why use the yield keyword, when I could just use an ordinary IEnumerable?
...possible.
– Chad Schouggins
Jan 2 '13 at 1:36
11
Don't forget that if the yield return statement ...
Where are shared preferences stored?
...
243
SharedPreferences are stored in an xml file in the app data folder, i.e.
/data/data/YOUR_PACKAG...
一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
...设备发出一个150个字节的MTU请求，但是从设备回应MTU是23字节，那么今后双方要以较小的值23字节作为以后的MTU），主从双方约定每次在做数据传输时不超过这个最大数据单元。
MTU交换通常发生在主从双方建立连接关...
How to create full compressed tar file using Python?
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edited Dec 31 '19 at 21:45
ventaquil
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How to make a PHP SOAP call using the SoapClient class
...oad the .NET sample WS at:
https://www.dropbox.com/s/6pz1w94a52o5xah/11593623.zip
The code.
This is what you need to do at PHP side:
(Tested and working)
<?php
// Create Contact class
class Contact {
public function __construct($id, $name)
{
$this->id = $id;
$t...
Test if element is present using Selenium WebDriver?
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edited Oct 8 '19 at 14:53
Raedwald
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answe...
How to check whether a file is empty or not?
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361
>>> import os
>>> os.stat("file").st_size == 0
True
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Node.js Logging
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edited Apr 10 '13 at 17:28
zs2020
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How to do a logical OR operation in shell scripting
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answered Nov 6 '10 at 2:03
Coding DistrictCoding District
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