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How can I add a column that doesn't allow nulls in a Postgresql database?
...ld have stated that the new table should be an exact copy of the original, including adding indices and such. My bad for being too brief. The reason for this is that there are also subtle diffculties of performing an ALTER on a table that may be live, and sometimes you need to stage it.
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How do I get the base URL with PHP?
... @admdrew thanks. I double-checked that REQUEST_URI already includes a /; it does. @swarnendu please be more careful when editing other people's answers. That should've been a comment instead.
– maček
Aug 19 '15 at 4:59
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Git Tag list, display commit sha1 hashes
...ossible. Just look up --date in the help page. I have updated my answer to include this option.
– ADTC
Nov 12 '17 at 20:54
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Stop Visual Studio from mixing line endings in files
...ons -> Line Endings Unifier.
The default file extension list that is included is pretty narrow:
.cpp; .c; .h; .hpp; .cs; .js; .vb; .txt;
Might want to use something like:
.cpp; .c; .h; .hpp; .cs; .js; .vb; .txt; .scss; .coffee; .ts; .jsx; .markdown; .config
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SQL WHERE ID IN (id1, id2, …, idn)
... Even SQL Server stops working after ~40k IN elements. According to MSDN: Including an extremely large number of values (many thousands) in an IN clause can consume resources and return errors 8623 or 8632. To work around this problem, store the items in the IN list in a table.
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What is the 'new' keyword in JavaScript?
...pt.
The most difficult part about this is point number 2. Every object (including functions) has this internal property called [[prototype]]. It can only be set at object creation time, either with new, with Object.create, or based on the literal (functions default to Function.prototype, numbers ...
How to get the CPU Usage in C#?
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Matt is right. Even including the bugs, like forgetting the "return" keyword.
– Mark At Ramp51
Mar 3 '11 at 1:01
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HashMap with multiple values under the same key
...you try creating an example yourself, and if you get stuck, ask a question including the code as far as you've got. You'll learn a lot more that way.
– Jon Skeet
Feb 10 '11 at 19:28
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What does the caret operator (^) in Python do?
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A slightly more illustrative example might include both numbers having 1 in the same bit to make it clear that 1 xor 1 = 0.
– Mike Graham
Mar 16 '10 at 2:36
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Running a specific test case in Django when your app has a tests directory
...d do:
python manage.py test example.tests.A.test_a
If you don't want to include a dependency and are in Django 1.6 or later that's how you do it.
See the Django documentation for more information
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