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Get object by id()? [duplicate]
Let's say I have an id of a Python object, which I retrieved by doing id(thing) . How do I find thing again by the id number I was given?
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Are there any O(1/n) algorithms?
Are there any O(1/n) algorithms?
32 Answers
32
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What does $$ mean in the shell?
I once read that one way to obtain a unique filename in a shell for temp files was to use a double dollar sign ( $$ ). This does produce a number that varies from time to time... but if you call it repeatedly, it returns the same number. (The solution is to just use the time.)
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What is the fastest substring search algorithm?
OK, so I don't sound like an idiot I'm going to state the problem/requirements more explicitly:
18 Answers
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How to evaluate a math expression given in string form?
I'm trying to write a Java routine to evaluate math expressions from String values like:
25 Answers
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How many parameters are too many? [closed]
Routines can have parameters, that's no news. You can define as many parameters as you may need, but too many of them will make your routine difficult to understand and maintain.
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Use cases for the 'setdefault' dict method
The addition of collections.defaultdict in Python 2.5 greatly reduced the need for dict 's setdefault method. This question is for our collective education:
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How to prevent robots from automatically filling up a form?
I'm trying to come up with a good enough anti-spamming mechanism to prevent automatically generated input. I've read that techniques like captcha, 1+1=? stuff work well, but they also present an extra step impeding the free quick use of the application (I'm not looking for anything like that please)...
Does the APNS device token ever change, once created?
Once created does the push notification device token ever change?
13 Answers
13
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Git interoperability with a Mercurial Repository
I use GIT on a Mac. Enough said. I have the tools, I have the experience. And I want to continue to use it. No wars here...
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