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Detecting endianness programmatically in a C++ program
...or little-endian architecture? I need to be able to write code that will execute on an Intel or PPC system and use exactly the same code (i.e. no conditional compilation).
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LEFT JOIN vs. LEFT OUTER JOIN in SQL Server
... specify JOIN. In other words, this is legal:
SELECT *
FROM A JOIN B ON A.X = B.Y
Here's a list of equivalent syntaxes:
A LEFT JOIN B A LEFT OUTER JOIN B
A RIGHT JOIN B A RIGHT OUTER JOIN B
A FULL JOIN B A FULL OUTER JOIN B
A INNER JOIN B A JOIN B
Also...
Operation on every pair of element in a list
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Check out product() in the itertools module. It does exactly what you describe.
import itertools
my_list = [1,2,3,4]
for pair in itertools.product(my_list, repeat=2):
foo(*pair)
This is equivalent to:
my_list = [1,2,3,4]
for x in my_list:
for y in my_list:
f...
Error when trying vagrant up
...ust vagrant init. That will create your Vagrantfile, but it won't have a box defined.
Instead, you could try
$ vagrant init hashicorp/precise32
$ vagrant up
which uses a standard Ubuntu image. The Vagrant website has a Getting Started which gives some good examples.
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Batch file include external file for variables
I have a batch file and I want to include external file containing some variables (say configuration variables). Is it possible?
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Matplotlib connect scatterplot points with line - Python
...nse for the points, which you can still plot via scatter, as per my first example. The question does not say anything about a varying line thickness or color, so I think your criticism is a bit unfair, really.
– Hannes Ovrén
Aug 24 '18 at 9:31
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Blocks and yields in Ruby
...ode block in order to perform arbitrary segments of code.
When a method expects a block, it invokes it by calling the yield function.
This is very handy, for instance, to iterate over a list or to provide a custom algorithm.
Take the following example:
I'm going to define a Person class initi...
jQuery If DIV Doesn't Have Class “x”
...
Use the "not" selector.
For example, instead of:
$(".thumbs").hover()
try:
$(".thumbs:not(.selected)").hover()
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Printing leading 0's in C?
...ou are padding with and the 5 shows the length of the integer number. For example if you use "%02d" (Useful for dates) this would only pad zeros for numbers in the ones column ie.(06 instead of 6). Example 2, "%03d" would pad 2 zeros for one number in the ones column and pad 1 zero for a number in ...
git replacing LF with CRLF
Running git on a Windows XP machine, using bash. I exported my project from SVN, and then cloned a bare repository.
20 Answ...