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Why should eval be avoided in Bash, and what should I use instead?
...ave viable alternatives to eval. Here's a handy list. command represents what you would normally send to eval; substitute in whatever you please.
No-op
A simple colon is a no-op in bash:
:
Create a sub-shell
( command ) # Standard notation
Execute output of a command
Never rely on an ex...
How to use filter, map, and reduce in Python 3
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You can read about the changes in What's New In Python 3.0. You should read it thoroughly when you move from 2.x to 3.x since a lot has been changed.
The whole answer here are quotes from the documentation.
Views And Iterators Instead Of Lists
Some well-know...
Multiple github accounts on the same computer?
...-directs to a page on User vs. organizational accounts (not sure if that's what was originally intended). this tutorial was easy to follow and solved my issues.
– Eric H.
Apr 26 '13 at 16:51
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What are DDL and DML?
...rd the terms DDL and DML in reference to databases, but I don't understand what they are.
12 Answers
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Difference between sh and bash
...ften use /bin/sh and /bin/bash . I usually use bash , but I don't know what's the difference between them.
12 Answers
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How to save an HTML5 Canvas as an image on a server?
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Here is an example of how to achieve what you need:
Draw something (taken from canvas tutorial)
<canvas id="myCanvas" width="578" height="200"></canvas>
<script>
var canvas = document.getElementById('myCanvas');
var context = canvas.g...
Change font size macvim?
...without changing anything else about it.
Then you can use :set gfn to see what it is now set to and add that to your .vimrc.
As an example, in my case it shows guifont=Monaco:h12 and so in order to get the same setting on startup, I added set gfn=Monaco:h12 to my .vimrc.
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How does functools partial do what it does?
...er.add_listener(log_listener)
With partials:
context = get_context() # whatever
notifier.add_listener(partial(log_event, context))
Of those three, partial is the shortest and the fastest.
(For a more complex case you might want a custom object though).
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What's the easy way to auto create non existing dir in ansible
In my Ansible playbook many times i need to create file there
7 Answers
7
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How do I set a background-color for the width of text, not the width of the entire element, using CS
What I want is for the green background to be just behind the text, not to be 100% of the page width. Here is my current code:
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