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How to iterate over the keys and values in an object in CoffeeScript?
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Use for x,y of L. Relevant documentation.
ages = {}
ages["jim"] = 12
ages["john"] = 7
for k,v of ages
console.log k + " is " + v
Outputs
jim is 12
john is 7
You may also want to consider the variant for own k,v of ages as mentioned by Aaron Dufour in the comments. This adds a check ...
Understanding dispatch_async
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521
The main reason you use the default queue over the main queue is to run tasks in the background....
What does new self(); mean in PHP?
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214
self points to the class in which it is written.
So, if your getInstance method is in a class ...
Load and execute external js file in node.js with access to local variables?
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134
Just do a require('./yourfile.js');
Declare all the variables that you want outside access as...
CSS Selector “(A or B) and C”?
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152
is there a better syntax?
No. CSS' or operator (,) does not permit groupings. It's essent...
must appear in the GROUP BY clause or be used in an aggregate function
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Yes, this is a common aggregation problem. Before SQL3 (1999), the selected fields must appear in the GROUP BY clause[*].
To workaround this issue, you must calculate the aggregate in a sub-query and then join it with itself to get the additional columns you'd need to show:
SEL...
Does it make any sense to use inline keyword with templates?
...Ua4K20.o:inlinexx.cc:(.text+0x0): first defined here
collect2: ld returned 1 exit status
Not stating inline when doing explicit instantiation may also lead to issues.
So in summary: For non fully specialized function templates, i.e. ones that carry at least one unknown type, you can omit inline, ...
Change Screen Orientation programmatically using a Button
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217
Yes it is implementable!
ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
setRequestedOrientation(Ac...
How to indicate param is optional using inline JSDoc?
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126
From official documentation:
Optional parameter
An optional parameter named foo.
@param...
Show an image preview before upload
...nerHTML =
[
'<img style="height: 75px; border: 1px solid #000; margin: 5px" src="',
e.target.result,
'" title="', escape(theFile.name),
'"/>'
].join('');
document.getElementById('list').insertBe...