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How would I get a cron job to run every 30 minutes?
I'm looking to add a crontab entry to execute a script every 30 minutes, on the hour and 30 minutes past the hour or something close. I have the following, but it doesn't seem to run on 0.
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Is there a way to measure how sorted a list is?
...onsider the example sequence 9, 5, 7, 6. This sequence has the inversions (0,1), (0,2), (0,3), (2,3) and the inversion number 4.
If you want a value between 0 and 1, you can divide the inversion number by N choose 2.
To actually create an algorithm to compute this score for how sorted a list is, you...
Difference between exit(0) and exit(1) in Python
What's the difference between exit(0) and exit(1) in Python?
5 Answers
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How do I create test and train samples from one dataframe with pandas?
...ering how I would be able to split the dataframe into two random samples (80% and 20%) for training and testing.
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How to convert 1 to true or 0 to false upon model fetch
... or false into a boolean/tinyint field in the database, which uses 1 or 0 .
4 Answers
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What exactly is nullptr?
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410
How is it a keyword and an instance of a type?
This isn't surprising. Both true and false a...
What is a method that can be used to increment letters?
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180
Simple, direct solution
function nextChar(c) {
return String.fromCharCode(c.charCodeAt(0) +...
Regular expression to match non-ASCII characters?
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This should do it:
[^\x00-\x7F]+
It matches any character which is not contained in the ASCII character set (0-127, i.e. 0x0 to 0x7F).
You can do the same thing with Unicode:
[^\u0000-\u007F]+
For unicode you can look at this 2 resources:
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Can someone give an example of cosine similarity, in a very simple, graphical way?
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10 Answers
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Format a number as 2.5K if a thousand or more, otherwise 900
...its not an even thousands, otherwise if under a thousand, display normal 500, 100, 250 etc, using javascript to format the number?
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