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Easy way to test a URL for 404 in PHP?
...ser has contributed the following:
/**
This is a modified version of code from "stuart at sixletterwords dot com", at 14-Sep-2005 04:52. This version tries to emulate get_headers() function at PHP4. I think it works fairly well, and is simple. It is not the best emulation available, but it works.
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What is the relationship between the docker host OS and the container base image OS?
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The container's kernel is going to be the one from ubuntu, but nothing more. You can run easily centos, archlinux, debian or any other linux based distribution as containers.
– creack
Sep 18 '13 at 17:15
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Cartesian product of multiple arrays in JavaScript
...adding flat and flatMap to the language!
Example
This is the exact example from your question:
let output = cartesian([1,2],[10,20],[100,200,300]);
Output
This is the output of that command:
[ [ 1, 10, 100 ],
[ 1, 10, 200 ],
[ 1, 10, 300 ],
[ 1, 20, 100 ],
[ 1, 20, 200 ],
[ 1, 20, 300 ],
...
Rollback a Git merge
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From here:
http://www.christianengvall.se/undo-pushed-merge-git/
git revert -m 1 <merge commit hash>
Git revert adds a new commit that rolls back the specified commit.
Using -m 1 tells it that this is a merge and w...
How to do case insensitive string comparison?
..., then it's a little more complicated 'cause you need to generate a RegExp from the string but passing the string to RegExp constructor can result in incorrect matches or failed matches if the string has special regex characters in it.
If you care about internationalization don't use toLowerCase() ...
How do I calculate the normal vector of a line segment?
Suppose I have a line segment going from (x1,y1) to (x2,y2). How do I calculate the normal vector perpendicular to the line?
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Why does Stream not implement Iterable?
...tream), as well as a host of other immensely awesome functionality missing from Stream.
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Can you have multiple $(document).ready(function(){ … }); sections?
...hat a function defined within one $(document).ready block cannot be called from another $(document).ready block, I just ran this test:
$(document).ready(function() {
alert('hello1');
function saySomething() {
alert('something');
}
saySomething();
});
$(document).ready(funct...
External template in Underscore
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@TommiForsström I agree. I've moved away from this approach. Wow! Dec 4, 2011 is a really long time ago in the world of Backbone.js development :)
– Brian Genisio
Jan 14 '13 at 15:49
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Rename Files and Directories (Add Prefix)
... the paramerter-replacing option of xargs: -I. And you can get more detail from the man page.
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