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Delete a key from a MongoDB document using Mongoose
...oc.set('field', undefined) might not be enough since strict mode (default) does not allow to set fields which are not in the schema anymore. doc.set('field', undefined, { strict: false }) worked fine.
– Alexander Link
Jul 2 '15 at 15:01
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How to check if a char is equal to an empty space?
...o reasons:
" " is a String literal and not a character literal, and Java does not allow direct comparison of String and char values.
You should NEVER compare Strings or String literals using ==. The == operator on a reference type compares object identity, not object value. In the case of String...
Convert seconds value to hours minutes seconds?
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It does exactly what the name suggests 'ConvertSecondToHHMMSSString'. The other (tedious) solutions are also wrapping around.
– Epicurist
Oct 18 '18 at 9:29
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Android 'Unable to add window — token null is not for an application' exception
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When you are showing any dialog in another class that does not extend the Activity class so you may not get the context of that class that is extending the Activity. So to get the context inside your class where you are trying to show the dialog but not extending the Activity yo...
WhatsApp API (java/python) [closed]
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WhatsApp Inc. does not provide an open API but a reverse-engineered library is made available on GitHub by the team Venomous on the GitHub. This however according to my knowledge is made possible in PHP. You can check the link here: https:...
Remove border from IFrame
...; height: 400px; border: 0"></iframe>
Note CSS border property does not achieve the desired results in IE6, 7 or 8.
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How do you change the datatype of a column in SQL Server?
... @TheincredibleJan That would be cool, but unfortunately it doesn't work that way. If you issue an ALTER TABLE TableName ALTER COLUMN ColumnName command to change an existing column that is [NOT NULL], and you don't explicitly specify it, it will be [NULL] afterwards, as that's the de...
How to set up Android emulator proxy settings
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Does not work with the most common use case of running Fiddler2 or other proxy on localhost.... probably adding port forwarding, but that is a pain too
– gcb
Aug 30 '13 at 1:16
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How to implement static class member functions in *.cpp file?
...it in the header, compiler will by default treat it as inline. However, it does not mean separate copies of the static member function will exist in the executable. Please follow this post to learn more about this:
Are static member functions in c++ copied in multiple translation units?
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Split string on the first white space occurrence
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Javascript doesn't support lookbehinds, so split is not possible. match works:
str.match(/^(\S+)\s(.*)/).slice(1)
Another trick:
str.replace(/\s+/, '\x01').split('\x01')
how about:
[str.replace(/\s.*/, ''), str.replace(/\S+\s/, '...