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How do I toggle an element's class in pure JavaScript?
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this is not a solution for a multitude of files. does not work with querySelectorAll (at least in FF) so for those looking to toggle classes on multiple elements read on :-) (I did not read on at first - thus my comment! )
– kev1807
J...
Return empty cell from formula in Excel
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Excel does not have any way to do this.
The result of a formula in a cell in Excel must be a number, text, logical (boolean) or error. There is no formula cell value type of "empty" or "blank".
One practice that I have seen foll...
Socket.IO Authentication
...ents. As the socket code is outside the scope of the http server code, it doesn't have easy access to the request information sent, so I'm assuming it will need to be sent up during the connection. What is the best way to
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How to get the number of Characters in a String?
...e it as:
a sequence of runes that starts with a starter,
a rune that does not modify or combine backwards with any other rune,
followed by possibly empty sequence of non-starters, that is, runes that do (typically accents).
The normalization algorithm processes one character at at time.
Usi...
Inline comments for Bash?
...ting in a Bash script
This will have some overhead, but technically it does answer your question
echo abc `#put your comment here` \
def `#another chance for a comment` \
xyz etc
And for pipelines specifically, there is a cleaner solution with no overhead
echo abc | # no...
Check if Key Exists in NameValueCollection
...collection = ...
string value = collection[key];
if (value == null) // key doesn't exist
2) if the specified key is found and its associated value is null.
collection[key] calls base.Get() then base.FindEntry() which internally uses Hashtable with performance O(1).
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How to calculate age (in years) based on Date of Birth and getDate()
...he first block of text makes this answer confusing. If your updated method does not have the issue with leap years, I'd suggest (if you really want to keep it at all) to move it down the bottom of your answer.
– ajbeaven
Jul 4 '17 at 23:14
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Use of var keyword in C#
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But the point is that in general it doesn't matter. Provided cust.Orders is something you can enumerate (eg foreach over) then it doesn't matter what type it is. The extra code just gets in the way of reading the intent.
– Matt Hamilton
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How can I get the behavior of GNU's readlink -f on a Mac?
...adlink utility accepts an option -f that follows additional links. This doesn't seem to work on Mac and possibly BSD based systems. What would the equivalent be?
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Git clone without .git directory
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what does !$/.git mean?
– Jürgen Paul
Jul 8 '13 at 18:00
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