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In log4j, does checking isDebugEnabled before logging improve performance?
...xity of the code because there are fewer branches.
Better yet is to use a more up-to-date logging framework where the log statements take a format specification and a list of arguments to be substituted by the logger—but "lazily," only if the logger is enabled. This is the approach taken by slf4j...
Sorting a Python list by two fields
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+1: More elegant than mine. I forgot that itemgetter can take multiple indices.
– dappawit
Mar 6 '11 at 19:43
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Why are regular expressions so controversial? [closed]
...matical regex” can be found in this answer and this one. These look much more like a grammatical declaration.
As the latter reminds you:
… make sure never to write line‐noise patterns. You don’t have to, and you shouldn’t. No programming language can be maintainable that forbids whit...
Asynchronous vs synchronous execution, what does it really mean? [closed]
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“Private” (implementation) class in Python
...ion for marking things as internal, "don't mess with this," whereas all is more for modules designed to be used with "from M import *", without necessarily implying that the module users shouldn't touch that class.
– Miles
Feb 15 '09 at 20:20
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Unescape HTML entities in Javascript?
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Javascript equivalent of Python's zip function
...r favorite workaday functional helpers: map, filter, invoke — as well as more specialized goodies: function binding, javascript templating, creating quick indexes, deep equality testing, and so on.
– Say the people who made it
I recently started using it specifically for the zip() function and ...
Alternative to google finance api [closed]
...y string (f=..). For an overview of all of the formats see this page.
For more examples, visit this page.
For XML and JSON-based data, you can do the following:
Don't use YQL (Yahoo Query Language)**
For example:
http://developer.yahoo.com/yql/console/?q=select%20*%20from%20yahoo.finance
.quo...
URL encoding in Android
...part of a URL and you know how to construct or reconstruct the URL. For a more general approach which can handle any url string, see my answer below.
– Craig B
Jan 22 '12 at 17:08
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