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In Typescript, How to check if a string is Numeric
...) // 1234
Number('9BX9') // NaN
You can also use the unary plus operator if you like shorthand:
+'1234' // 1234
+'9BX9' // NaN
Be careful when checking against NaN (the operator === and !== don't work as expected with NaN). Use:
isNaN(maybeNumber) // returns true if NaN, otherwise false
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Why does Javascript's regex.exec() not always return the same value? [duplicate]
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A JavaScript RegExp object is stateful.
When the regex is global, if you call a method on the same regex object, it will start from the index past the end of the last match.
When no more matches are found, the index is reset to 0 automatically.
To reset it manually, set the lastIndex pr...
Where are iOS simulator screenshots stored?
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If you create screenshots from within the simulator using File -> Save Screen Shot (Command-S), those files end up on the Desktop as something like: iOS Simulator Screen shot Apr 22, 2012.png.
Under Xcode 6 & newer, de...
Pass a PHP string to a JavaScript variable (and escape newlines) [duplicate]
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If you use UTF-8 that's the best solution by far.
– Kornel
Oct 13 '08 at 23:02
4
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How to copy a local Git branch to a remote repo
... the same ref (e.g. refs/heads/experimental) in origin repository with it.
If experimental did not exist remotely, it would be created.
This is the same as:
git push origin experimental:refs/heads/experimental
Create the branch experimental in the origin repository by copying the current experiment...
Convert nested Python dict to object?
...y what the OP wants. A demonstration:
>>> from bunch import bunchify
>>> d = {'a': 1, 'b': {'c': 2}, 'd': ["hi", {'foo': "bar"}]}
>>> x = bunchify(d)
>>> x.a
1
>>> x.b.c
2
>>> x.d[1].foo
'bar'
A Python 3 library is available at https://github....
Prevent form redirect OR refresh on submit?
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Amazing. Where can I find specification docs explaining that false prevents submission?
– davide
Jan 3 '15 at 3:33
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What is the difference between Modal and Push segue in Storyboards?
Can someone explain to me what is the exact difference between modal and push segue?
4 Answers
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Does every Javascript function have to return a value?
...he short answer is no.
The real answer is yes: the JS engine has to be notified that some function has finished its business, which is done by the function returning something. This is also why, instead of "finished", a function is said to "have returned".
A function that lacks an explicit return s...
How do I UPDATE from a SELECT in SQL Server?
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If you are editing the the link between tables (SET Table.other_table_id = @NewValue) then change the ON statement to something like ON Table.id = @IdToEdit AND other_table.id = @NewValue
– Trisped
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