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Deleting queues in RabbitMQ
... not) by using queue.declare. If you originally set auto-delete to false, calling queue.declare again with autodelete true will result in a soft error and the broker will close the channel.
You need to use queue.delete now in order to delete it.
See the API documentation for details:
Java Clie...
How to convert string to boolean php
...sted by @lauthiamkok in the comments. I'm posting it here as an answer to call more attention to it.
Depending on your needs, you should consider using filter_var() with the FILTER_VALIDATE_BOOLEAN flag.
filter_var( true, FILTER_VALIDATE_BOOLEAN); // true
filter_var( 'true', FILTER_VALIDATE...
How do I update pip itself from inside my virtual environment?
... create a file lock on the executable, which would prevent updating it. By calling Python and telling it to load the module directly, you avoid accessing the executable.
– jpmc26
Jul 15 '16 at 15:44
...
How to use a decimal range() step value?
...ist comprehension instead:
[x * 0.1 for x in range(0, 10)]
(Replace the call to range with that expression.)
For the more general case, you may want to write a custom function or generator.
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How do I use the ternary operator ( ? : ) in PHP as a shorthand for “if / else”?
...ondition is false */ ;
syntax is not a "shorthand if" operator (the ? is called the conditional operator) because you cannot execute code in the same manner as if you did:
if (condition) {
/* condition is true, do something like echo */
}
else {
/* condition is false, do something else */...
.gitignore is ignored by Git
... edited Feb 21 at 3:16
Abel Callejo
9,05577 gold badges4444 silver badges6262 bronze badges
answered Jul 12 '12 at 12:20
...
How to remove trailing whitespace of all files recursively?
...-print0 | xargs -0 perl -pi -e 's/ +$//'
as a zsh user, you can omit the call to find, and instead use:
perl -pi -e 's/ +$//' **/*
Note: To prevent destroying .git directory, try adding: -not -iwholename '*.git*'.
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Javascript: How to loop through ALL DOM elements on a page?
...n how much you do in each level of recursion, you can build a mightily big call stack by the time you get to the bottom. A NodeList is simply referencing the Nodes that are already built in your DOM, so it's not as heavy as you might imagine. Someone who knows more can weigh in, but I think it's jus...
/bin/sh: pushd: not found
...ed by child processes. (A hypothetical pushd command might do the chdir(2) call and then start a new shell, but ... it wouldn't be very usable.) pushd is a shell builtin, just like cd.
So, either change your script to start with #!/bin/bash or store the current working directory in a variable, do y...
Git/GitHub can't push to master
...
This error occurs when you clone a repo using a call like:
git clone git://github.com/....git
This essentially sets you up as a pull-only user, who can't push up changes.
I fixed this by opening my repo's .git/config file and changing the line:
[remote "origin"]
u...