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How to avoid warning when introducing NAs by coercion
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142
Use suppressWarnings():
suppressWarnings(as.numeric(c("1", "2", "X")))
[1] 1 2 NA
This su...
Converting string into datetime
...:
from datetime import datetime
datetime_object = datetime.strptime('Jun 1 2005 1:33PM', '%b %d %Y %I:%M%p')
The resulting datetime object is timezone-naive.
Links:
Python documentation for strptime: Python 2, Python 3
Python documentation for strptime/strftime format strings: Python 2, Pyth...
What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
...f the array.
So for example:
int[] array = new int[5];
int boom = array[10]; // Throws the exception
As for how to avoid it... um, don't do that. Be careful with your array indexes.
One problem people sometimes run into is thinking that arrays are 1-indexed, e.g.
int[] array = new int[5];
// ...
How to get thread id from a thread pool?
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answered Jul 20 '10 at 20:59
skaffmanskaffman
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How to assign a Git SHA1's to a file without Git?
As I understand it when Git assigns a SHA1 hash to a file this SHA1 is unique to the file based on its contents.
12 Answer...
“simple” vs “current” push.default in git for decentralized workflow
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186
The difference is that with simple, git push (without passing a refspec) will fail if the curr...
How to prevent Browser cache for php site
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answered Nov 30 '12 at 6:33
CodesenCodesen
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How to get the clicked link's href with jquery?
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175
this in your callback function refers to the clicked element.
$(".addressClick").click(fun...
How do I calculate square root in Python?
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10 Answers
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Which terminal command to get just IP address and nothing else?
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181
You can write a script that only return the IP like:
/sbin/ifconfig eth0 | grep 'inet addr' |...