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Portable way to get file size (in bytes) in shell?
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14 Answers
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pandas: How do I split text in a column into multiple rows?
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This splits the Seatblocks by space and gives each its own row.
In [43]: df
Out[43]:
CustNum CustomerName ItemQty Item Seatblocks ItemExt
0 32363 McCartney, Paul 3 F04 2:218:10:4,6 60
1 31316 Lennon, John 25 F01 1:13:36:...
SVN undo delete before commit
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145
svn revert deletedDirectory
Here's the documentation for the svn revert command.
EDIT
If delet...
How to detect iPhone 5 (widescreen devices)?
I've just upgraded to XCode 4.5 GM and found out that you can now apply the '4" Retina' size to your view controller in the storyboard.
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C pointer to array/array of pointers disambiguation
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445
int* arr[8]; // An array of int pointers.
int (*arr)[8]; // A pointer to an array of integers
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Efficient evaluation of a function at every cell of a NumPy array
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164
You could just vectorize the function and then apply it directly to a Numpy array each time you ...
How do you match only valid roman numerals with a regular expression?
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You can use the following regex for this:
^M{0,4}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})$
Breaking it down, M{0,4} specifies the thousands section and basically restrains it to between 0 and 4000. It's a relatively simple:
0: <empty> matched by M{0}
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How do you set your pythonpath in an already-created virtualenv?
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mdeousmdeous
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Creating an array of objects in Java
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This is correct.
A[] a = new A[4];
...creates 4 A references, similar to doing this:
A a1;
A a2;
A a3;
A a4;
Now you couldn't do a1.someMethod() without allocating a1 like this:
a1 = new A();
Similarly, with the array you need to do this:
a[0] = n...