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How to avoid the “divide by zero” error in SQL?
...hen null
Else dividend / divisor
End ,,,
But here is a much nicer way of doing it:
Select dividend / NULLIF(divisor, 0) ...
Now the only problem is to remember the NullIf bit, if I use the "/" key.
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UITextField - capture return button event
...user pressed "return" keyboard button while editing UITextField?
I need to do this in order to dismiss keyboard when user pressed the "return" button.
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IE9 jQuery AJAX with CORS returns “Access is denied”
...ort this in core and is better suited as a plugin." (See this comment).
IE does not use the XMLHttpRequest, but an alternative object named XDomainRequest.
There is a plugin available to support this in jQuery, which can be found here:
https://github.com/jaubourg/ajaxHooks/blob/master/src/xdr.js
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Rails migration: t.references with alternative name?
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You can do this all in the initial migration/column definition (at least currently in Rails 5):
t.references :transferable_as, index: true, foreign_key: {to_table: :courses}
t.references :same_as, index: true, foreign_key: {to_table...
What's the use of session.flush() in Hibernate
...e flush behavior can be changed via the Flush Mode setting. Details are in docs.jboss.org/hibernate/orm/3.5/api/org/hibernate/… (version 3.5).
– SteveT
Oct 11 '12 at 14:27
1
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Perform commands over ssh with Python
...script to automate some command line commands in Python. At the moment I'm doing calls thus:
13 Answers
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Why does Google +1 record my mouse movements? [closed]
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It appears to be seeding a random number generator with your mouse movements.
The mouse move handler itself does something along the lines of the following:
var b = ((event.X << 16) + event.Y) * (new Date().getTime() % 1000000);
c = c * b % d;
if ...
“document.getElementByClass is not a function”
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You probably meant document.getElementsByClassName() (and then grabbing the first item off the resulting node list):
var stopMusicExt = document.getElementsByClassName("stopButton")[0];
stopButton.onclick = function() {
var ta = document....
Pass arguments to Constructor in VBA
....CreateClassB(other_arguments), etc.
EDIT
As stenci pointed out, you can do the same thing with a terser syntax by avoiding to create a local variable in the constructor functions. For instance the CreateEmployee function could be written like this:
Public Function CreateEmployee(name as String, ...
Python List vs. Array - when to use?
... and 3.x offer a mutable byte string as bytearray.
However, if you want to do math on a homogeneous array of numeric data, then you're much better off using NumPy, which can automatically vectorize operations on complex multi-dimensional arrays.
To make a long story short: array.array is useful when...