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What does curly brackets in the `var { … } = …` statements do?
...r with Python, it's similar to this syntax:
>>> a, (b, c) = (1, (2, 3))
>>> a, b, c
(1, 2, 3)
The first code chunk is shorthand for:
var {Hotkey: Hotkey} = require("sdk/hotkeys");
// Or
var Hotkey = require("sdk/hotkeys").Hotkey;
You can rewrite the second code chunk as:
let...
Make page to tell browser not to cache/preserve input values
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answered Apr 23 '10 at 14:38
DisgruntledGoatDisgruntledGoat
59.9k6060 gold badges185185 silver badges278278 bronze badges
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Change color of UISwitch in “off” state
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My solution with #swift2:
let onColor = _your_on_state_color
let offColor = _your_off_state_color
let mSwitch = UISwitch(frame: CGRect.zero)
mSwitch.on = true
/*For on state*/
mSwitch.onTintColor = onColor
/*For off state*/
mSwitch.tintColor = ...
How to get arguments with flags in Bash
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edited Jul 24 '19 at 5:04
Pablo Bianchi
8431313 silver badges2121 bronze badges
answered ...
Map and Reduce in .NET
...ferent names.
Map is Select:
Enumerable.Range(1, 10).Select(x => x + 2);
Reduce is Aggregate:
Enumerable.Range(1, 10).Aggregate(0, (acc, x) => acc + x);
Filter is Where:
Enumerable.Range(1, 10).Where(x => x % 2 == 0);
https://www.justinshield.com/2011/06/mapreduce-in-c/
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'printf' vs. 'cout' in C++
...e when you print many arguments. If you have to write something like Error 2: File not found., assuming error number, and its description is placeholder, the code would look like this. Both examples work identically (well, sort of, std::endl actually flushes the buffer).
printf("Error %d: %s.\n", i...
Download File Using jQuery
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edited Aug 20 '09 at 2:33
answered Aug 18 '09 at 19:51
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Iterating each character in a string using Python
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452
As Johannes pointed out,
for c in "string":
#do something with c
You can iterate pretty ...