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Should I use 'has_key()' or 'in' on Python dicts?

...ng, I didn't see that. I suppose it's because x in d.keys() must construct and destroy a temporary object, complete with the memory allocation that entails, where x in d.keys() is just doing an arithmetic operation (computing the hash) and doing a lookup. Note that d.keys() is only about 10 times as...
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How can I get a file's size in C++? [duplicate]

...? Before answering, make sure it is portable (may be executed on Unix, Mac and Windows), reliable, easy to understand and without library dependencies (no boost or qt, but for instance glib is ok since it is portable library). ...
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MySQL get row position in ORDER BY

...sition of 2 when the first query will give a position of 2 to one of them, and 3 to the other... share | improve this answer | follow | ...
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Store password in TortoiseHg

...//username:password@hostname.com/repo. This is explained in Google Code's and Mercurial's FAQs. EDIT: Mercurial FAQ explains another way to do it: With Mercurial 1.3 you can also add an auth section to your hgrc file: [auth] example.prefix = https://hg.example.net/ example.username = foo exam...
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How do I create a unique ID in Java? [duplicate]

... Create a UUID. String uniqueID = UUID.randomUUID().toString(); share | improve this answer | follow | ...
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Git error when trying to push — pre-receive hook declined

When I try and push a change I've commited, I get the following error ... 27 Answers 2...
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Is there a way to create a function from a string with javascript?

...anned response generated by the moderation system :) it pops up in a queue and we check for predetermined problems, one of which this comment is designed to fix. It's not a hard and fast rule, and you'll notice the comment is in the form of a suggestion not a command. – Dan Smi...
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What's the simplest way to print a Java array?

... Since Java 5 you can import java.util.Arrays; and then use Arrays.toString(arr) or Arrays.deepToString(arr) for arrays within arrays. Note that the Object[] version calls .toString() on each object in the array. The output is even decorated in the exact way you're asking...
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How do I fix certificate errors when running wget on an HTTPS URL in Cygwin?

...es (as a neighboring answer advices) because that's fundamentally insecure and may compromise the system. Second, you need to tell wget where your certificates are, since it doesn't pick them up by default in Cygwin environment. If you can do that either with the command-line parameter --ca-directo...
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Read error response body in Java

...etInputStream() will throw an IO Exception. You should catch the exception and read from error stream using getErrorStream(). This seems to be a better approach than checking on httpresponse code. – Sudarshan Bhat Aug 20 '12 at 12:04 ...