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Difference between malloc and calloc?
...e client process. This works same way memory mapped files, virtual memory, etc. work.. it uses paging.
Here is one optimization story about the topic:
http://blogs.fau.de/hager/2007/05/08/benchmarking-fun-with-calloc-and-zero-pages/
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Delete an element from a dictionary
... the copy module.
Note that making a copy for every dict del/assignment/etc. means you're going from constant time to linear time, and also using linear space. For small dicts, this is not a problem. But if you're planning to make lots of copies of large dicts, you probably want a different data ...
Convert int to ASCII and back in Python
...Like for example flickr does.
# note the missing lowercase L and the zero etc.
BASE58 = '123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ'
url = ''
while node_id >= 58:
div, mod = divmod(node_id, 58)
url = BASE58[mod] + url
node_id = int(div)
return 'http://short.com/%s' ...
What are “res” and “req” parameters in Express functions?
...es it can handle, whether or not it's able to understand HTTP compression, etc.
An array of query string parameters if there were any, in request.query (e.g. /people.json?foo=bar would result in request.query.foo containing the string "bar").
To respond to that request, you use the response object...
Timer & TimerTask versus Thread + sleep in Java
...And it deals better with multithreading issues (such as avoiding deadlocks etc.). And of course it is usually better to use well-tested standard code instead of some homemade solution.
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impro...
Reliable method to get machine's MAC address in C#
...rkInterfaceType.Loopback); var sortedNetworks = activeNetworks.OrderByDescending(ni => ni.Speed); return sortedNetworks.First().GetPhysicalAddress().ToString();
– Graham Laight
Nov 22 '13 at 17:03
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how to create a Java Date object of midnight today and midnight tomorrow?
...ations and takes care of timezones (and especially day light savings times etc.) when used properly. I don't see that in your solution.
– Bouncner
Jan 22 '13 at 0:20
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__getattr__ on a module
...nality then anything else in the module, such as globals, other functions, etc., will be lost when the sys.modules assignment is made -- so make sure everything needed is inside the replacement class.
Note 2: To support from module import * you must have __all__ defined in the class; for example:
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Chrome Uncaught Syntax Error: Unexpected Token ILLEGAL [duplicate]
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How do I 'overwrite', rather than 'merge', a branch on another branch in Git?
...ible solutions. If you absolutely require the merge parents in the correct order, need perform this action with a single command line invocation, and don't mind running plumbing commands, you can do the following:
$ git checkout A
$ git merge --ff-only $(git commit-tree -m "Throw away branch 'A'" -p...