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How to make an unaware datetime timezone aware in python
...ocalize method:
import datetime
import pytz
unaware = datetime.datetime(2011, 8, 15, 8, 15, 12, 0)
aware = datetime.datetime(2011, 8, 15, 8, 15, 12, 0, pytz.UTC)
now_aware = pytz.utc.localize(unaware)
assert aware == now_aware
For the UTC timezone, it is not really necessary to use localize sin...
to drawRect or not to drawRect (when should one use drawRect/Core Graphics vs subviews/images and wh
...frame rate on the oldest hardware your app will support. If you can't get 60fps, drop down to CoreGraphics. When you've done this for a while, you get a sense for when UIKit is probably a waste of time.
So, why is Core Graphics fast?
CoreGraphics isn't really fast. If it's being used all the time,...
ComponentGroup 组件组扩展：监控内容变化和批量启用禁用组件 · App Inventor 2 中文网
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1.0
2020-03-01
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属性 Properties
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.keyCode vs. .which
...
Note: The answer below was written in 2010. Here many years later, both keyCode and which are deprecated in favor of key (for the logical key) and code (for the physical placement of the key). But note that IE doesn't support code, and its support for key is based...
How to add new column to MYSQL table?
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edited Apr 24 '16 at 17:02
answered Apr 19 '13 at 21:28
D...
Python string class like StringBuilder in C#?
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103
There is no one-to-one correlation. For a really good article please see Efficient String Conc...
How can I read and parse CSV files in C++?
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304
If you don't care about escaping comma and newline,
AND you can't embed comma and newline in qu...
jQuery scroll to element
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4105
Assuming you have a button with the id button, try this example:
$("#button").click(function()...
Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes
...t-param>
Alternatively, you can also use <o:form> of OmniFaces 3.0+ which defaults to this behavior.
The standard JSF equivalent to the PrimeFaces specific process is execute from <f:ajax execute>. It behaves exactly the same except that it doesn't support a comma-separated string wh...
How do I split a string, breaking at a particular character?
...t 4~New York~NY~12345';
var fields = input.split('~');
var name = fields[0];
var street = fields[1];
// etc.
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