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Why are empty strings returned in split() results?
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184
str.split complements str.join, so
"/".join(['', 'segment', 'segment', ''])
gets you back the...
how to get the host url using javascript from the current page
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answered May 18 '11 at 8:44
Eric HerlitzEric Herlitz
21.2k2424 gold badges101101 silver badges146146 bronze badges
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Replacing Pandas or Numpy Nan with a None to use with MysqlDB
...[2]:
0
0 1
1 NaN
In [3]: df1 = df.where(pd.notnull(df), None)
In [4]: df1
Out[4]:
0
0 1
1 None
Note: what you cannot do recast the DataFrames dtype to allow all datatypes types, using astype, and then the DataFrame fillna method:
df1 = df.astype(object).replace(np.nan, 'Non...
How to print out more than 20 items (documents) in MongoDB's shell?
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edited Feb 6 at 9:47
Wilfred Knievel
3,02711 gold badge2424 silver badges3333 bronze badges
answ...
Reordering arrays
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224
The syntax of Array.splice is:
yourArray.splice(index, howmany, element1, /*.....,*/ elementX);...
Is it a bad practice to use negative margins in Android?
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194
In 2010, @RomainGuy (core Android engineer) stated that negative margins had unspecified behavio...
Can you supply arguments to the map(&:method) syntax in Ruby?
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141
You can create a simple patch on Symbol like this:
class Symbol
def with(*args, &block)
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How to use UIScrollView in Storyboard
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149
I'm answering my own question because I just spent 2 hours to find the solution and StackOverfl...
How to handle :java.util.concurrent.TimeoutException: android.os.BinderProxy.finalize() timed out af
...finalize , and PlainSocketImpl.finalize . 90+% of them happen on Android 4.3. We're getting reports of this from Crittercism from users out in the field.
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How to map with index in Ruby?
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846
If you're using ruby 1.8.7 or 1.9, you can use the fact that iterator methods like each_with_in...