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What's the simplest way to subtract a month from a date in Python?
...a had a month argument in it's constructor. So what's the simplest way to do this?
20 Answers
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Make a link open a new window (not tab) [duplicate]
Is there a way to make a link open a new browser window (not tab) without using javascript?
5 Answers
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Can a foreign key be NULL and/or duplicate?
...FK is by definition. Null by definition is not a value. Null means that we do not yet know what the value is.
Let me give you a real life example. Suppose you have a database that stores sales proposals. Suppose further that each proposal only has one sales person assigned and one client. So your ...
Release generating .pdb files, why?
Why does Visual Studio 2005 generate the .pdb files when compiling in release? I won't be debugging a release build, so why are they generated?
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how to make a whole row in a table clickable as a link?
I'm using Bootstrap and the following doesn't work:
26 Answers
26
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virtualenvwrapper and Python 3
...thon3 installed as well virtualenvwrapper the only thing you would need to do to use python3 with the virtual environment is creating an environment using:
which python3 #Output: /usr/bin/python3
mkvirtualenv --python=/usr/bin/python3 nameOfEnvironment
Or, (at least on OSX using brew):
mkvirtua...
Get the real width and height of an image with JavaScript? (in Safari/Chrome)
...
That's clever, didn't know you could do $(img).load();
– SeanJA
Sep 18 '09 at 2:24
3
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Finding Variable Type in JavaScript
..."
"string"
> typeof true
"boolean"
> typeof 42
"number"
So you can do:
if(typeof bar === 'number') {
//whatever
}
Be careful though if you define these primitives with their object wrappers (which you should never do, use literals where ever possible):
> typeof new Boolean(false)
"...
How to define servlet filter order of execution using annotations in WAR
...it's sufficient to annotate all filters with just a filterName so that you don't need the <filter> definition, but just a <filter-mapping> definition in the desired order.
For example,
@WebFilter(filterName="filter1")
public class Filter1 implements Filter {}
@WebFilter(filterName="fi...
HTTP Content-Type Header and JSON
...ontent-Type header is just used as info for your application. The browser doesn't care what it is. The browser just returns you the data from the AJAX call. If you want to parse it as JSON, you need to do that on your own.
The header is there so your app can detect what data was returned and how...