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In Ruby, is there an Array method that combines 'select' and 'map'?
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You can use reduce for this, which requires only one pass:
[1,1,1,2,3,4].reduce([]) { |a, n| a.push(n*3) if n==1; a }
=> [3, 3, 3]
In other words, initialize the state to be what you want (in our case, an empty list to fill: []), then always make sure to return this ...
Move assignment operator and `if (this != &rhs)`
..., other.mArray + mSize, mArray);
}
return *this;
}
Explanation:
One of the more expensive things you can do on modern hardware is make a trip to the heap. Anything you can do to avoid a trip to the heap is time & effort well spent. Clients of dumb_array may well want to often assign...
Best practice multi language website
...d project (horrible framework, IMHO). I encountered both of the above mentioned problems before scraping that solution. Also, I suspect that it might be an attack vector.
Available options ... as I see them.
Basically you have two choices, that could be abstracted as:
http://site.tld/[:query]: wher...
How do I keep two side-by-side divs the same height?
... by side. I'd like the height of them to be the same, and stay the same if one of them resizes. I can't figure this one out though. Ideas?
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deciding among subprocess, multiprocessing, and thread in Python?
...hreads are notoriously subtle, and, with CPython, you are often limited to one core, with them (even though, as noted in one of the comments, the Global Interpreter Lock (GIL) can be released in C code called from Python code).
I believe that most of the functions of the three modules you cite can ...
What is the difference between an Azure Web Site and an Azure Web Role
..., ftp, CodePlex, DropBox, BitBucket deployment support
Ability to roll out one of numerous CMS's and frameworks, (like WordPress, Joomla, Django, MediaWiki, etc.)
Use of SQL Database or MySQL
Simple and fast to scale from free tier to shared tier to dedicated tier
Web Jobs
Backups of Web Site conten...
Cookies on localhost with explicit domain
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Not sure why everyone is +1'ing this, I set the domain of the cookie to null or false or empty string and it still doesn't save if on localhost.
– Justin
Sep 6 '11 at 14:34
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How to get past the login page with Wget?
...Based on the manual page:
# Log in to the server. This only needs to be done once.
wget --save-cookies cookies.txt \
--keep-session-cookies \
--post-data 'user=foo&password=bar' \
--delete-after \
http://server.com/auth.php
# Now grab the page or pages we care about.
wget ...
Is unsigned integer subtraction defined behavior?
I have come across code from someone who appears to believe there is a problem subtracting an unsigned integer from another integer of the same type when the result would be negative. So that code like this would be incorrect even if it happens to work on most architectures.
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Apply formula to the entire column
... Make sure you CLEAR your column data first and only apply your formula to one. The above answer with "ArrayFormula" seems to be able to apply a many cells to one formula, which is not what OP wanted.
– Thanasis Kapelonis
May 3 '16 at 18:03
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