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Pandas every nth row
...d use iloc, which takes a row/column slice, both based on integer position and following normal python syntax.
df.iloc[::5, :]
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How to compare two Dates without the time portion?
...n API, you should create an instance of Calendar with the appropriate date and using the appropriate time zone. You could then set each field in each calendar out of hour, minute, second and millisecond to 0, and compare the resulting times. Definitely icky compared with the Joda solution though :)
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Python pip install fails: invalid command egg_info
... edited Jun 5 '14 at 10:33
evandrix
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answered Jul 11 '12 at 5:01
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How does comparison operator works with null int?
I am starting to learn nullable types and ran into following behavior.
4 Answers
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What does it mean when MySQL is in the state “Sending data”?
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This is quite a misleading status. It should be called "reading and filtering data".
This means that MySQL has some data stored on the disk (or in memory) which is yet to be read and sent over. It may be the table itself, an index, a temporary table, a sorted output etc.
If you have a 1...
error: writable atomic property cannot pair a synthesized setter/getter with a user defined setter/g
...tried to compile an older Xcode project (which used to compile just fine), and now I'm seeing a lot of errors of this form:
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Resharper- Find all unused classes
...w to find unused references of a single file by right clicking on the file and selecting the "Find Usages" option. Is there any way I can see or get the list of all the unused classes or files in my project ?
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JSON.parse vs. eval()
... just wondering if JSON.parse() - which I assume is a part of JavaScript and not a browser-specific function - is more secure.
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Why does Clojure have “keywords” in addition to “symbols”?
...cently I've been reading about Clojure . I see that it has both "symbols" and "keywords". Symbols I'm familiar with, but not with keywords.
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HashSet versus Dictionary w.r.t searching time to find if an item exists
...estion as the OP. I already have a dictionary i'm using for other reasons, and wanted to know if i benefit from changing to a Hashset instead of using ContainsKey. Looks like the answer is no since both are so fast.
– FistOfFury
Sep 12 '12 at 19:15
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