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invalid target release: 1.7
...rectory, for example on Microsoft Windows:
"C:\Program Files\Java\jdk1.7.0_40"
or on OS X:
/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home
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Why sizeof int is wrong, while sizeof(int) is right?
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101
The following could be ambiguous:
sizeof int * + 1
Is that (sizeof (int*)) + 1, or (sizeof(i...
Haskell error parse error on input `='
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160
In GHCi 7.x or below, you need a let to define things in it.
Prelude> let f x = x * 2
Prelud...
Python creating a dictionary of lists
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answered Jun 6 '09 at 23:00
mechanical_meatmechanical_meat
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Transpose a data frame
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109
You'd better not transpose the data.frame while the name column is in it - all numeric values w...
SQL Server Escape an Underscore
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edited Jun 12 at 0:28
Pang
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Accessing outside variable using anonymous function as params
...nce).
– Joel Harkes
Jul 24 '18 at 5:04
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Python pandas Filtering out nan from a data selection of a column of strings
...en drop where name is NaN:
In [87]:
nms
Out[87]:
movie name rating
0 thg John 3
1 thg NaN 4
3 mol Graham NaN
4 lob NaN NaN
5 lob NaN NaN
[5 rows x 3 columns]
In [89]:
nms = nms.dropna(thresh=2)
In [90]:
nms[nms.name.notnull()]
Out[90]:
m...
Test if a command outputs an empty string
...r success, non-zero for failure). For example:
files=$(ls -A)
if [[ $? != 0 ]]; then
echo "Command failed."
elif [[ $files ]]; then
echo "Files found."
else
echo "No files found."
fi
More info here.
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Where in an Eclipse workspace is the list of projects stored?
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answered Oct 30 '08 at 17:56
VonCVonC
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