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Selecting data frame rows based on partial string match in a column

... 150 I notice that you mention a function %like% in your current approach. I don't know if that's a r...
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How to draw vertical lines on a given plot in matplotlib?

...tual height is plt.axvline import matplotlib.pyplot as plt plt.axvline(x=0.22058956) plt.axvline(x=0.33088437) plt.axvline(x=2.20589566) OR xcoords = [0.22058956, 0.33088437, 2.20589566] for xc in xcoords: plt.axvline(x=xc) You can use many of the keywords available for other plot command...
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Android studio: new project vs new module

... 102 From the documentation (Android Studio is based on Intellij IDEA) : Whatever you do in Inte...
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How do I get the row count of a pandas DataFrame?

...e=[2**k for k in range(25)], kernels=[ lambda data: data.shape[0], lambda data: data[0].count(), lambda data: len(data.index), ], labels=["data.shape[0]", "data[0].count()", "len(data.index)"], xlabel="data rows" ) EDIT: As @Dan Allen noted in the comments l...
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Getting current date and time in JavaScript

... 600 .getMonth() returns a zero-based number so to get the correct month you need to add 1, so calli...
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What does ~~ (“double tilde”) do in Javascript?

...result is a number. In other words, it yields: function(x) { if(x < 0) return Math.ceil(x); else return Math.floor(x); } only if x is between -(231) and 231 - 1. Otherwise, overflow will occur and the number will "wrap around". This may be considered useful to convert a function's string...
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List comprehension in Ruby

...1, 2, 3, 4, 5, 6] new_array = some_array.comprehend {|x| x * 3 if x % 2 == 0} puts new_array Prints: 6 12 18 I would probably just do it the way you did though. share | improve this answer ...
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Why does struct alignment depend on whether a field type is primitive or user-defined?

...est = new RefAndTwoInt32Wrappers(); test.text = "adsf"; test.x.x = 0x11111111; test.y.x = 0x22222222; Console.ReadLine(); // <=== Breakpoint here When the breakpoint hits, use Debug + Windows + Memory + Memory 1. Switch to 4-byte integers and put &test in the Address f...
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Understanding slice notation

... answered Feb 3 '09 at 22:48 Greg HewgillGreg Hewgill 783k167167 gold badges10841084 silver badges12221222 bronze badges ...
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How to get first element in a list of tuples?

... >>> a = [(1, u'abc'), (2, u'def')] >>> [i[0] for i in a] [1, 2] share | improve this answer | follow | ...