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What is the colon operator in Ruby?
...ifferent objects, even if they are equal content. == compares the content, and the equivalent checks with symbols are much faster.
user system total real
string 0.370000 0.000000 0.370000 ( 0.371700)
str == str 0.330000 0.000000 0.330000 ( 0.326368...
Comparing numbers in Bash
...hen
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fi
For POSIX shells that don't support (()), you can use -lt and -gt.
if [ "$a" -gt "$b" ]; then
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fi
You can get a full list of comparison operators with help test or man test.
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Is there a way to iterate over a range of integers?
Go's range can iterate over maps and slices, but I was wondering if there is a way to iterate over a range of numbers, something like this:
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Determine the data types of a data frame's columns
I'm using R and have loaded data into a dataframe using read.csv() . How do I determine the data type of each column in the data frame?
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Why does i = i + i give me 0?
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Could you expand on your answer a bit?
– DeaIss
Jun 11 '14 at 22:16
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How to form tuple column from two columns in Pandas
I've got a Pandas DataFrame and I want to combine the 'lat' and 'long' columns to form a tuple.
4 Answers
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What are the aspect ratios for all Android phone and tablet devices?
I'm looking for a list of all screen aspect ratios for popular Android based Phones and Tablets.
5 Answers
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Is it possible to apply CSS to half of a character?
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Now on GitHub as a Plugin!
Feel free to fork and improve.
Demo | Download Zip | Half-Style.com (Redirects to GitHub)
Pure CSS for a Single Character
JavaScript used for automation across text or multiple characters
Preserves Text Accessibility for screen readers fo...
MySQL connection not working: 2002 No such file or directory
I'm trying to set up WordPress. I have Apache and MySQL running, and the accounts and database are all set up. I tried to make a simple connection:
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How do I iterate over an NSArray?
I'm looking for the standard idiom to iterate over an NSArray. My code needs to be suitable for OS X 10.4+.
8 Answers
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