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MongoDB aggregation framework match OR
...n' }] }
Like so, since the $match operator just takes what you would normally put into the find() function
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Placeholder in IE9
It seems it's a very well known problem but all the solutions I found on Google don't work on my newly downloaded IE9.
11 A...
Assigning code to a variable
...age" as a parameter (note that I changed Action to Action<string> in order to specify a single string parameter):
Action<string> ButtonClicked = (message) => MessageBox.Show(message);
ButtonClicked("hello world!");
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Which would be better for concurrent tasks on node.js? Fibers? Web-workers? or Threads?
... mean that it lacks things. For a synchronous job (where we can decide the order and way of processing), it works as well as multi-threaded parallelism. For a job that comes from outside like requests to a server, it simply is superior.
(1) Unless you are building libraries in other languages lik...
Is it better to call ToList() or ToArray() in LINQ queries?
...the case where I want to eval a query right where I declare it. This is usually because I need to iterate over it multiple times and it is expensive to compute. For example:
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Adding a user to a group in django
... I would expect to see in a section of the docs under auth for programmatically creating groups. instead all there is is a weak paragraph: docs.djangoproject.com/en/1.3/topics/auth/#groups I guess it helps to keep in mind that the auth models are just regular models, and the standard model reference...
Django: Display Choice Value
...ing your information via JSON (for instance in a pagination scenario)? Ideally without the overhead of instantiating the Models one by one and calling get_field_display().
– DylanYoung
Mar 23 '17 at 17:34
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How to define custom configuration variables in rails
...n You're getting that error, because Rails doesn't know what store is. In order to use the method in this answer, you can either rename your variable store_works, or create a config.store block with works defined therein.
– Paul Pettengill
Aug 21 '14 at 18:16
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Live character count for EditText
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Thanks i too got it, but how to get count down in reverse order like 150,149,148,147.... while entering the text.
– vinay Maneti
Nov 21 '13 at 12:50
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Insert line after first match using sed
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Note the standard sed syntax (as in POSIX, so supported by all conforming sed implementations around (GNU, OS/X, BSD, Solaris...)):
sed '/CLIENTSCRIPT=/a\
CLIENTSCRIPT2="hello"' file
Or on one line:
sed -e '/CLIENTSCRIPT=/a\' -e 'CLIENTSCRIPT2="hello"' file
(-expressions (and t...