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Is there a quicker / better way to clear the iPhone Simulator cache than deleting its directory?
...a, or the contents of the iPhone Simulator directory, to get things to actually execute from my code. Clean in Xcode doesn't do the same as emptying those directories, right? And if not, is there an easier way to do it than lugging Finder around to get to them, and clearing them?
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How do I filter ForeignKey choices in a Django ModelForm?
... can populate the validation data by making using the super(...).__init__ call in your overridden method. If you are making several of these queryset changes its a lot more elegant to package them by overriding the init method.
– michael
Aug 7 '09 at 4:53
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Why are functions and methods in PHP case-insensitive?
...ent little CGI programs written in C before I got sick of it, and combined all of them into a single C library. I then wrote a very simple parser that would pick tags out of HTML files and replace them with the output of the corresponding functions in the C library.
The simple parser slowly grew to ...
Shards and replicas in Elasticsearch
...e need to create an index.
When you create an index (an index is automatically created when you index the first document as well) you can define how many shards it will be composed of. If you don't specify a number it will have the default number of shards: 5 primaries. What does it mean?
It mean...
Count, size, length…too many choices in Ruby?
...1
In the case where you don't provide a parameter to count it has basically the same effect as calling length. There can be a performance difference though.
We can see from the source code for Array that they do almost exactly the same thing. Here is the C code for the implementation of array.l...
In MySQL queries, why use join instead of where?
...le about using strict typing whenever possible. Explicit is almost universally better.
Conclusion
Short of familiarity and/or comfort, I don't see any benefit to continuing to use the ANSI-89 WHERE clause instead of the ANSI-92 JOIN syntax. Some might complain that ANSI-92 syntax is more verb...
What to do with branch after merge
...he merge, it's safe to delete the branch:
git branch -d branch1
Additionally, git will warn you (and refuse to delete the branch) if it thinks you didn't fully merge it yet. If you forcefully delete a branch (with git branch -D) which is not completely merged yet, you have to do some tricks to ge...
How do I escape reserved words used as column names? MySQL/Create Table
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IMHO you should quote all field names and table names always.
– rjmunro
Sep 17 '13 at 11:50
10
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How do I embed a single file from a GitHub gist with the new gist interface?
...tHub Gist interface has one embed snippet for the entire gist which embeds all files in the gist. The old interface had embed code for each file in the gist. Anyone know if there's a trick to embed a single file?
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pinpointing “conditional jump or move depends on uninitialized value(s)” valgrind message
... use of uninitialised data in a way that might affect your program's externally-visible behaviour.
From the Valgrind FAQ:
As for eager reporting of copies of uninitialised memory values, this has been suggested multiple times. Unfortunately, almost all programs legitimately copy uninitialised ...