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How to sort an array in descending order in Ruby
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Super useful. Thanks for the extra effort.
– Joshua Pinter
Jan 25 '12 at 23:36
8
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Django: Why do some model fields clash with each other?
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Sometimes you have to use extra formatting in related_name
- actually, any time when inheritance is used.
class Value(models.Model):
value = models.DecimalField(decimal_places=2, max_digits=5)
animal = models.ForeignKey(
Animal, relat...
Use RSA private key to generate public key?
...d mykey.pem file.
openssl rsa -in mykey.pem -pubout > mykey.pub
will extract the public key and print that out. Here is a link to a page that describes this better.
EDIT: Check the examples section here. To just output the public part of a private key:
openssl rsa -in key.pem -pubout -out p...
What is causing “Unable to allocate memory for pool” in PHP?
...accessed all of the time like you want and have a big spike where a lot of extra infrequent files get added all at once), you are going to get errors thrown for TTL seconds. The cache is full, and you told APC that it shouldn't clear these entries so it complains. If you have TTL for 5 hours, you en...
#include in .h or .c / .cpp?
...t up to protect against multiple declaration/definition errors, then a few extra seconds of build time isn't worth worrying about. Trying to manage dependencies manually is a pain in the ass.
Of course, you shouldn't be including files where you don't need to.
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Exit a Script On Error
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@mouviciel, @Gilles: Thanks for the extra info. It's been a while since I dealt with bash.
– DGH
Dec 8 '10 at 1:37
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What is the best practice for “Copy Local” and with project references?
...ripts are parametrized for both debug and release builds. The downside is extra time up front to build said scripts, but they can be reused across apps. This solution has worked well by my standards.
– jyoungdev
Jun 3 '10 at 18:48
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Creating functions in a loop
...cifically looking for early binding.
If you're worried about f getting an extra argument (and thus potentially being called erroneously), there's a more sophisticated way which involved using a closure as a "function factory":
def make_f(i):
def f():
return i
return f
and in your...
promise already under evaluation: recursive default argument reference or earlier problems?
...ying that x=x in the call was the best solution, since it does not involve extra syntax or accumulating more and more variable names.
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Creating an instance of class
... new Bar ( Foo::Foo() ); is not usual. It's usually new Bar ( (Foo()) ); - extra parenthesis account for most-vexing parse. (corrected)
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