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RegEx for matching UK Postcodes
...ts better to loosely match with a simplified regex to weed out the obvious errors and then apply further checks such as an address lookup (or confirmation email in the case of email regex) to confirm the validity.
– James Coyle
Mar 22 '19 at 9:20
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Is it possible to run selenium (Firefox) web driver without a GUI?
...it, it seems that PhantomJS still needs a gui environment to work.
I got Error Code -6 when I use PhantomJS() instead of Firefox() in headless mode (putty-connected console). However everything is ok in desktop environment.
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Variable declaration placement in C
...top of the for loop scope block. But, the char *s declaration should be an error.
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How to fix homebrew permissions?
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I get Error: Permission denied @ rb_sysopen when trying to install anything. brew install wget example: Error: Permission denied @ rb_sysopen - /private/tmp/github_api_headers20180921-2313-16tl72c
– olefrank
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Can't find the 'libpq-fe.h header when trying to install pg gem
...SQL, but the problem is installing the pg gem. It gives me the following error:
41 Answers
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Preferred method to store PHP arrays (json_encode vs serialize)
...oment.
A simple speed test to compare the two
<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);
// Make a big, honkin test array
// You may need to adjust this depth to avoid memory limit errors
$testArray = fillArray(0, 5);
// Time json encoding
$start = microtime(true);
json_enco...
surface plots in matplotlib
...our x,y,z are some arbitrary variables. In my case these were c,gamma, and errors because I was testing a support vector machine. There are many potential choices to plot the data:
scatter3D(cParams, gammas, avg_errors_array) - this works but is overly simplistic
plot_wireframe(cParams, gammas, av...
What is object serialization?
What is meant by "object serialization"? Can you please explain it with some examples?
14 Answers
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How to set a stroke-width:1 on only certain sides of SVG shapes?
Setting a stroke-width: 1 on a <rect> element in SVG places a stroke on every side of the rectangle.
3 Answers
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Lambda capture as const reference?
...eference: [&foo = this->foo] inside of a const function gives me an error stating that the capture itself discards qualifiers. This could be a bug in GCC 5.1, though, I suppose.
– Kyle Strand
Apr 28 '16 at 1:01
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