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Multiplication on command line terminal
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209
Yes, you can use bash's built-in Arithmetic Expansion $(( )) to do some simple maths
$ echo "$...
JavaScript function order: why does it matter?
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+600
tl;dr If you're not calling anything until everything loads, you should be fine.
Edit: For an overview which also covers some ES6...
What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
...even less portable and break on fairly recent systems (e.g. even Ubuntu 16.04 if not later).
Another downside is that since you aren't calling an explicit executable, it's got the potential for mistakes, and on multiuser systems security problems (if someone managed to get their executable called b...
How to use GROUP_CONCAT in a CONCAT in MySQL
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answered Nov 19 '12 at 10:33
SamiSami
6,95744 gold badges5555 silver badges9090 bronze badges
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Format a date using the new date time API
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answered Apr 14 '14 at 20:10
James_DJames_D
167k1111 gold badges220220 silver badges269269 bronze badges
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TypeError: got multiple values for argument
...gs, **kwargs)
Then the call
color_box("blellow", color="green", height=20, width=30)
will fail because two values are assigned to color: "blellow" as positional and "green" as keyword. (painter.draw_box is supposed to accept the height and width arguments).
This is easy to see in the example, ...
How can I check whether an array is null / empty?
...mpty" here has no official meaning. I'm choosing to define empty as having 0 elements:
arr = new int[0];
if (arr.length == 0) {
System.out.println("array is empty");
}
An alternative definition of "empty" is if all the elements are null:
Object arr[] = new Object[10];
boolean empty = true;
for...
How to export collection to CSV in MongoDB?
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UPDATE:
This commit: https://github.com/mongodb/mongo-tools/commit/586c00ef09c32c77907bd20d722049ed23065398 fixes the docs for 3.0.0-rc10 and later. It changes
Fields string `long:"fields" short:"f" description:"comma separated list of field names, e.g. -f name,age"`
to
Fields string `long:"...
What is the explanation for these bizarre JavaScript behaviours mentioned in the 'Wat' talk for Code
The 'Wat' talk for CodeMash 2012 basically points out a few bizarre quirks with Ruby and JavaScript.
5 Answers
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