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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
... I get following warning when doing new column creation like that: "SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame. Try using .loc[row_indexer,col_indexer] = value instead." Should I be worried about that? pandas v.0.15
– taras...
How to get the last character of a string in a shell?
I have written the following lines to get the last character of a string:
8 Answers
8
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For every character in string
How would I do a for loop on every character in string in C++?
9 Answers
9
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Sorting an array of objects by property values
I've got the following objects using AJAX and stored them in an array:
30 Answers
30
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How do I create and read a value from cookie?
... var expires;
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
expires = "; expires=" + date.toGMTString();
}
else {
expires = "";
}
document.cookie = name + "=" + value + expires + "; path=/";
}
fun...
Parse query string in JavaScript [duplicate]
...params,p,i,j) {
return function (qs) {
// start bucket; can't cheat by setting it in scope declaration or it overwrites
params = {};
// remove preceding non-querystring, correct spaces, and split
qs = qs.substring(qs.indexOf('?')+1).replace(x,' ').split('&');
// march and par...
How can I wait for set of asynchronous callback functions?
...r
after.map(array, function (value, done) {
// do something async
setTimeout(function () {
// do something with the value
done(null, value * 2)
}, 10)
}, function (err, mappedArray) {
// all done, continue here
console.log(mappedArray)
})
...
Match multiline text using regular expression
...er newlines are included or not. I'd prefer . with the Pattern.DOTALL flag set (this is easier to read and remember than (?s) in my opinion. You should use what you feel most comfortable with.
– Tim Pietzcker
Sep 7 '10 at 7:43
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When to delete branches in Git?
...
You can safely remove a branch with git branch -d yourbranch. If it contains unmerged changes (ie, you would lose commits by deleting the branch), git will tell you and won't delete it.
So, deleting a merged branch is cheap and won't ...