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How to rollback just one step using rake db:migrate
...think using VERSION=n is the right way to do that, but I don't know the correct value of n to use. Is there any command to check the current n value?
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How to send an email using PHP?
...sing PHP's mail() function it's possible. Remember mail function will not work on a Local server.
<?php
$to = 'nobody@example.com';
$subject = 'the subject';
$message = 'hello';
$headers = 'From: webmaster@example.com' . "\r\n" .
'Reply-To: webmaster@example.com' . "\r\n" .
'X-Maile...
How can I calculate the time between 2 Dates in typescript
This works in Javascript
5 Answers
5
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How to install packages using pip according to the requirements.txt file from a local directory?
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This works for me:
$ pip install -r requirements.txt --no-index --find-links file:///tmp/packages
--no-index - Ignore package index (only looking at --find-links URLs instead).
-f, --find-links <URL> - If a URL or path t...
what is the difference between ajax and jquery and which one is better? [closed]
I am confused about using ajax or jquery so I want to know what the differences are and which one is better such as performance and complexity .
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Java: Get last element after split
... use the array's length field to find its length. Subtract one to account for it being 0-based:
String[] bits = one.split("-");
String lastOne = bits[bits.length-1];
Caveat emptor: if the original string is composed of only the separator, for example "-" or "---", bits.length will be 0 and this w...
Error when changing to master branch: my local changes would be overwritten by checkout
This question is similar to this one, but more specific.
7 Answers
7
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Is there a reason that Swift array assignment is inconsistent (neither a reference nor a deep copy)?
...estion no longer applies. The following answer applied to beta 2:
It's for performance reasons. Basically, they try to avoid copying arrays as long as they can (and claim "C-like performance"). To quote the language book:
For arrays, copying only takes place when you perform an action that ha...
How can I maximize a split window?
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or , :only will do the job.
– shibly
Oct 20 '11 at 3:47
14
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Is there a numpy builtin to reject outliers from a list
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This method is almost identical to yours, just more numpyst (also working on numpy arrays only):
def reject_outliers(data, m=2):
return data[abs(data - np.mean(data)) < m * np.std(data)]
s...