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mongodb group values by multiple fields
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207
TLDR Summary
In modern MongoDB releases you can brute force this with $slice just off the bas...
What's the difference between “git reset” and “git checkout”?
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204
git reset is specifically about updating the index, moving the HEAD.
git checkout is about up...
How do you get the Git repository's name in some Git repository?
...emote get-url origin)
– fjammes
Apr 20 at 8:24
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How to use the “required” attribute with a “radio” input field
...eft off.
– Joel Wigton
Dec 2 '19 at 20:24
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@Seybsen Nah, "in general" does cover that this isn'...
1052: Column 'id' in field list is ambiguous
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Jul 10 '11 at 1:31
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Do you put unit tests in same project or another project?
...e candidate directory, aka a Christmas release directory would be "Release20081225".
If production build succeeds, unit test build runs.
Copy production code to "tests" directory.
Build unit tests to "tests" directory.
Run unit tests.
Send build notifications and unit tests results to developer...
How do I remove all non alphanumeric characters from a string except dash?
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Here's a regex compiled version: return Regex.Replace(str, "[^a-zA-Z0-9_.]+", "", RegexOptions.Compiled); Same basic question
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Why does Clojure have “keywords” in addition to “symbols”?
...ating.
– Brian Carper
Oct 16 '09 at 20:44
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It seems keywords are more useful as keys in hashmaps...
Python division
...t; 1 / 2
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You should make one of them a float:
>>> float(10 - 20) / (100 - 10)
-0.1111111111111111
or from __future__ import division, which the forces / to adopt Python 3.x's behavior that always returns a float.
>>> from __future__ import division
>>> (10 - 20) / ...
How to alter SQL in “Edit Top 200 Rows” in SSMS 2008
In SQL Server 2008 Management Studio, when I right click on a database table and choose " Select Top 100 Rows ", I can then e.g. easily add a "ORDER BY " statement to the SQL. That works fine .
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