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Python Git Module experiences? [closed]
...nces with any of the Git modules for Python? (I know of GitPython, PyGit, and Dulwich - feel free to mention others if you know of them.)
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Android View.getDrawingCache returns null, only null
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I was having this problem also and found this answer:
v.setDrawingCacheEnabled(true);
// this is the important code :)
// Without it the view will have a dimension of 0,0 and the bitmap will be null
v.measure(MeasureSpec.makeMeasureSpec(0, Me...
Real World Example of the Strategy Pattern
I've been reading about the OCP principal and how to use the strategy pattern to accomplish this.
17 Answers
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SQL: How to properly check if a record exists
...optimize SELECT COUNT(*) anyway, so while there is a difference in theory (and older databases), you shouldn't notice any difference in practice.
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PostgreSQL - Rename database
...think it's better to keep table names restricted to just lowercase letters and underscore if possible!
– Aswin Sanakan
Feb 17 at 6:52
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What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?
...se the InnoDB engine. In that case you would have to drop the foreign key, and then do the alter table and drop the column.
But the tricky part is that you can't drop the foreign key using the column name, but instead you would have to find the name used to index it. To find that, issue the followi...
Delete column from SQLite table
...xample, suppose you have a table named "t1" with columns names
"a", "b", and "c" and that you want to delete column "c" from this
table. The following steps illustrate how this could be done:
BEGIN TRANSACTION;
CREATE TEMPORARY TABLE t1_backup(a,b);
INSERT INTO t1_backup SELECT a,b FROM t1;
DRO...
What is Erlang written in?
What is Ericsson's implementation of Erlang and Erlang/OTP written and compiled in? Is is assembly, C or Erlang itself?
4 A...
What does it mean to “program to an interface”?
I have seen this mentioned a few times and I am not clear on what it means. When and why would you do this?
32 Answers
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NSInvocation for Dummies?
...message rendered static, that is, it is an action turned into an object.
And, in a little more detail:
The concept of messages is central to the objective-c philosophy. Any time you call a method, or access a variable of some object, you are sending it a message. NSInvocation comes in handy when ...