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What does the 'b' character do in front of a string literal?
...x.
So yes, b'...' literals in Python have the same purpose that they do in PHP.
Also, just out of curiosity, are there
more symbols than the b and u that do
other things?
The r prefix creates a raw string (e.g., r'\t' is a backslash + t instead of a tab), and triple quotes '''...''' or """...""" a...
Remove characters after specific character in string, then remove substring?
...t I couldn't find quite what I needed (except in another language: Remove All Text After Certain Point ).
8 Answers
...
How do I create a parameterized SQL query? Why Should I?
...ple would do this through a server side programming language library, like PHP's PDO or Perl DBI.
For instance, in PDO:
$dbh=pdo_connect(); //you need a connection function, returns a pdo db connection
$sql='insert into squip values(null,?,?)';
$statement=$dbh->prepare($sql);
$data=array('my...
What is a postback?
...
When does it happen?
A postback originates from the client browser. Usually one of the controls on the page will be manipulated by the user (a button clicked or dropdown changed, etc), and this control will initiate a postback. The state of this control, plus all other controls on the page,(know...
Automatic Retina images for web sites
...
There is a new attribute for the img tag that allows you to add a retina src attribute, namely srcset. No javascript or CSS needed, no double loading of images.
<img src="low-res.jpg" srcset="high-res.jpg 2x">
Browser Support: http://caniuse.com/#search=srcset
O...
How to delete a word and go into insert mode in Vim?
...aw deletes the trailing space as well.
– Roberto Bonvallet
Sep 7 '09 at 4:38
5
:help objects in v...
CGRidCtrl控件 学习心得 - C/C++ - 清泛网 - 专注C/C++及内核技术
...的控件作为一个注册对象而不会产生一些莫名其妙的WIN95问题。
另外，也可以选择使用CGridCtrl::Create()。
本文实例采用的是后一种方法。具体过程如下：
首先，自定义一个CGridCtrl的派生类，CMyGridCtrl。添加函数:
void SetColum...
How to show google.com in an iframe?
...ilar to Google style. Google CSE works with web and images search.
google.php
<script>
(function() {
var cx = 'xxxxxxxxxxxxxxxxxxxxxx';
var gcse = document.createElement('script');
gcse.type = 'text/javascript';
gcse.async = true;
gcse.src = 'https://cse.google.com/cse....
MySql Table Insert if not exist otherwise update
...since it's the unique key, so it should not change. You do need to include all of the other columns from your table. You can use the VALUES() function to make sure the proper values are used when updating the other columns.
Here is your update re-written using the proper INSERT ... ON DUPLICATE KEY...