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How do I retrieve the number of columns in a Pandas data frame?
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312
Like so:
import pandas as pd
df = pd.DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [...
How do I declare and initialize an array in Java?
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For primitive types:
int[] myIntArray = new int[3];
int[] myIntArray = {1, 2, 3};
int[] myIntArray = new int[]{1, 2, 3};
// Since Java 8. Doc of IntStream: https://docs.oracle.com/javase/8/docs/api/java/util/stream/IntStream.html
int [] myIntArray = IntStream.range(0, 100).toArray(); // From 0 ...
What's the UIScrollView contentInset property for?
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241
It sets the distance of the inset between the content view and the enclosing scroll view.
Obj-C...
How to get the first element of an array?
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31 Answers
31
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How to install a specific version of a ruby gem?
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1182
Use the -v flag:
$ gem install fog -v 1.8
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How do you read CSS rule values with JavaScript?
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16 Answers
16
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iterating over each character of a String in ruby 1.8.6 (each_char)
...e on each character separately from a base String in ruby. I am using ruby 1.8.6 and would like to do something like:
5 Ans...
How do I parse JSON with Objective-C?
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175
With the perspective of the OS X v10.7 and iOS 5 launches, probably the first thing to recomme...
Convert a number range to another range, maintaining ratio
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18 Answers
18
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How to convert a std::string to const char* or char*?
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1091
If you just want to pass a std::string to a function that needs const char* you can use
std...