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Remove by _id in MongoDB console
...jectId.
Also, note that in some drivers/tools, remove() is now deprecated and deleteOne or deleteMany should be used instead.
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Byte array to image conversion
...n I preloaded a whole lot of large graphic files as bytearrays into memory and then turned them into images during viewing.
– Kayot
Nov 6 '17 at 1:59
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Copy values from one column to another in the same table
...uestion is:
UPDATE `table` SET test=number
Here table is the table name and it's surrounded by grave accent (aka back-ticks `) as this is MySQL convention to escape keywords (and TABLE is a keyword in that case).
BEWARE, that this is pretty dangerous query which will wipe everything in column te...
How do I decode a URL parameter using C#?
...t didn't fully work with just one call! I ran Uri.UnescapeDataString twice and got what I wanted!! :D
– C0NFUS3D
Dec 31 '13 at 2:28
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How to set background color in jquery
... answered Jan 24 '11 at 9:59
jAndyjAndy
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Why can't I forward-declare a class in a namespace using double colons?
...viously declared) entities. They can't be used to introduce new entities.
And you are in fact "reopening" the namespace to declare new entities. If the class Class is later defined as a member of different namespace - it is a completely different class that has nothing to do with the one you declar...
check if a std::vector contains a certain object? [duplicate]
...erator==. If you need to account for numerical tolerance, use std::find_if and supply a suitable predicate.
– You
Aug 20 '15 at 18:38
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How to fix: “UnicodeDecodeError: 'ascii' codec can't decode byte”
...ing that does not contain any encoding. They only hold Unicode point codes and therefore can hold any Unicode point from across the entire spectrum. Strings contain encoded text, beit UTF-8, UTF-16, ISO-8895-1, GBK, Big5 etc. Strings are decoded to Unicode and Unicodes are encoded to strings. Files ...
Add a fragment to the URL without causing a redirect?
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No worries - and it makes you wonder why it always returns it.
– alex
Nov 26 '10 at 2:13
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Is it possible only to declare a variable without assigning any value in Python?
...es. If you init something to None, make sure that's what you really want, and assign something more meaningful if you can.
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