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Chmod recursively
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edited Nov 14 '12 at 11:30
answered Nov 14 '12 at 11:23
Fr...
Efficient way to apply multiple filters to pandas DataFrame or Series
...
250
Pandas (and numpy) allow for boolean indexing, which will be much more efficient:
In [11]: df.l...
How to calculate date difference in JavaScript?
...icktoofay
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41
...
CSS - Overflow: Scroll; - Always show vertical scroll bar?
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401
Just ran into this problem myself. OSx Lion hides scrollbars while not in use to make it seem m...
How to synchronize a static variable among threads running different instances of a class in Java?
...s on the class object.
public class Test {
private static int count = 0;
public static synchronized void incrementCount() {
count++;
}
}
Explicitly synchronize on the class object.
public class Test {
private static int count = 0;
public void incrementCount() {
...
How can I check if character in a string is a letter? (Python)
...
AMC
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answered Mar 21 '13 at 21:24
rainerrainer
...
Booleans, conditional operators and autoboxing
...onditional expression is the result of applying capture conversion (§5.1.10) to lub(T1, T2) (§15.12.2.7).
S1 == <special null type> (see §4.1)
S2 == boolean
T1 == box(S1) == <special null type> (see last item in list of boxing conversions in §5.1.7)
T2 == box(S2) == `Boolean
lub(...
How to easily initialize a list of Tuples?
...
305
c# 7.0 lets you do this:
var tupleList = new List<(int, string)>
{
(1, "cow"),...
Plot a bar using matplotlib using a dictionary
...ort matplotlib.pyplot as plt
D = {u'Label1':26, u'Label2': 17, u'Label3':30}
plt.bar(range(len(D)), list(D.values()), align='center')
plt.xticks(range(len(D)), list(D.keys()))
# # for python 2.x:
# plt.bar(range(len(D)), D.values(), align='center') # python 2.x
# plt.xticks(range(len(D)), D.keys(...
How to count certain elements in array?
...
Very simple:
var count = 0;
for(var i = 0; i < array.length; ++i){
if(array[i] == 2)
count++;
}
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