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inserting characters at the start and end of a string
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Mark ByersMark Byers
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Finding the index of elements based on a condition using python list comprehension
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Convert number strings with commas in pandas DataFrame to float
...ap(atof)
Out[12]:
0 1
0 1200 4200.00
1 7000 -0.03
2 5 0.00
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How to change the output color of echo in Linux
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2435
You can use these ANSI escape codes:
Black 0;30 Dark Gray 1;30
Red 0;31...
Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...uest 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 pointing at elements themselves, so the indices only go from 0 to 3.
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Obtain Bundle Identifier programmatically
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457
Objective-C
NSString *bundleIdentifier = [[NSBundle mainBundle] bundleIdentifier];
Swift 1.2...
Sass - Converting Hex to RGBa for background opacity
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For each row return the column name of the largest value
...ples using sample reproducible):
DF <- data.frame(V1=c(2,8,1),V2=c(7,3,5),V3=c(9,6,4))
colnames(DF)[apply(DF,1,which.max)]
[1] "V3" "V1" "V2"
A faster solution than using apply might be max.col:
colnames(DF)[max.col(DF,ties.method="first")]
#[1] "V3" "V1" "V2"
...where ties.method can be a...
How to prevent Browser cache for php site
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Set custom attribute using JavaScript
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