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How do I create an empty array/matrix in NumPy?
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Delete element in a slice
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edited Oct 14 '18 at 10:23
flornquake
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answered J...
Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...emselves):
:peanut :butter :and :jelly
0 1 2 3 4
4 is still within the array, just barely; if you request 0 elements, you get the empty end of the array. But there is no index 5, so you can't slice from there.
When you do index (like array[4]), you are pointin...
How can I sort a dictionary by key?
What would be a nice way to go from {2:3, 1:89, 4:5, 3:0} to {1:89, 2:3, 3:0, 4:5} ?
I checked some posts but they all use the "sorted" operator that returns tuples.
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Avoid trailing zeroes in printf()
...tf format specifiers. The closest you could get would be:
printf("%.6g", 359.013); // 359.013
printf("%.6g", 359.01); // 359.01
but the ".6" is the total numeric width so
printf("%.6g", 3.01357); // 3.01357
breaks it.
What you can do is to sprintf("%.20g") the number to a string buffer then...
How to form tuple column from two columns in Pandas
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answered Apr 17 '13 at 19:24
Dale JungDale Jung
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How can I check if a string represents an int, without using try/except?
Is there any way to tell whether a string represents an integer (e.g., '3' , '-17' but not '3.14' or 'asfasfas' ) Without using a try/except mechanism?
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Static variables in member functions
...e of i will remain through out the program. To add an example:
A o1, o2, o3;
o1.foo(); // i = 1
o2.foo(); // i = 2
o3.foo(); // i = 3
o1.foo(); // i = 4
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Java synchronized static methods: lock on object or class
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Ravindra babu
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answered Jan 13 '09 at 0:53
OscarRyzOscar...