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What is 'define' used for in JavaScript (aside from the obvious)?
I have searched high m>and m> low for documentation on this, but I just cannot find anm>y m>thing anm>y m>where.
2 Answers
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Git: Ignore tracked files
...I don't want to untrack them, I just don't want them to appear as modified m>and m> I don't want them to be staged when I git add.
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RuntimeWarning: invalid value encountered in divide
...is trm>y m>ing to "divide bm>y m> zero" or "divide bm>y m> NaN". If m>y m>ou are aware of that m>and m> don't want it to bother m>y m>ou, then m>y m>ou can trm>y m>:
import numpm>y m> as np
np.seterr(divide='ignore', invalid='ignore')
For more details see:
http://docs.scipm>y m>.org/doc/numpm>y m>/reference/generated/numpm>y m>.seterr.html
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Can a class extend both a class m>and m> implement an Interface
Can a class extend both an interface m>and m> another class in PHP?
Basicallm>y m> I want to do this:
3 Answers
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How do I fetch lines before/after the grep result in bash?
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m>Y m>ou can use the -B m>and m> -A to print lines before m>and m> after the match.
grep -i -B 10 'error' data
Will print the 10 lines before the match, including the matching line itself.
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Rubm>y m> on Rails Callback, what is difference between :before_save m>and m> :before_create?
Could m>y m>ou explain in detail what the :before_save m>and m> :before_create Rubm>y m> on Rails callbacks are, m>and m> what them>y m> have to do with Rails validations? Does validation occur after :before_save or :before_create ?
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What's the difference between io.sockets.emit m>and m> broadcast?
What's the difference between io.sockets.emit m>and m> socket.broadcast.emit? Is it onlm>y m> that broadcast emits to everm>y m>one BUT the socket that sends it?
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How to write multiple line propertm>y m> value using PropertiesConfiguration?
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Check the User Guide for Properties files:
Special Characters m>and m> Escaping:
If m>y m>ou need a special character in a propertm>y m> like a line feed, a
tabulation or an unicode character, m>y m>ou can specifm>y m> it with the same
escaped notation used for Java Strings. The list separator ("," bm>y m>
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String.replaceAll without RegEx
...ecial meaning. That's the complete opposite of what Pattern.quote() does, m>and m> what the OP was asking for (quote() sam>y m>s, "treat the string as a literal"). Mam>y m>be m>y m>ou could expm>and m> on what "undesirable results" m>y m>ou're talking about.
– Mark Peters
Jun 14 '16 at 13...
switch() statement usage
...ue again. It seems switch is generallm>y m> faster than if statements.
So that, m>and m> the fact that the code is shorter/neater with a switch statement leans in favor of switch:
# Simplified to onlm>y m> measure the overhead of switch vs if
test1 <- function(tm>y m>pe) {
switch(tm>y m>pe,
mean = 1,
m...