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advantage of tap method in ruby
...iately clear. A reader would not have to read what is inside the block to know that an instance user is created.
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How to encrypt String in Java
...t and use AES-GCM mode for all your encryptions and you shall be secure.
Now if you want to learn the nitty gritty details on how to encrypt in java read on :)
Block Ciphers
First thing first you need to pick a symmetric key Block Cipher. A Block Cipher is a computer function/program used to cr...
The SQL OVER() clause - when and why is it useful?
...t
GROUP BY [Partition]
) agg ON orig.[Partition] = agg.[Partition]
Now look how you can do the same with a windowed aggregate:
SELECT
[Partition],
Value,
Value * 100.0 / SUM(Value) OVER (PARTITION BY [Partition]) AS ValuePercent
FROM OriginalRowset orig
Much easier and cleaner, isn'...
Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
... will leave it up to him to figure it out. I don't have such a processor.
Now, on my machine I don't get this 256 byte boundary effect. Only the function and the loop alignment kicks in on my machine. If I pass g++ -O2 -falign-functions=16 -falign-loops=16 then everything is back to normal: I alway...
How to keep a Python script output window open?
...n 3? in python 3 it was renamed to input(). But I would use python 2.6 for now, since python 3 lacks important third party libraries that haven't been ported yet. (see other questions on python 2vs3). About editor, I don't use windows, notepad++ lets you configure the command. I use emacs which has ...
What is code coverage and how do YOU measure it?
...n't used them. I've also heard there's the gcov tool for GCC, but I don't know anything about it and can't give you a link.
As to how we use it - code coverage is one of our exit criteria for each milestone. We have actually three code coverage metrics - coverage from unit tests (from the developme...
How to pass object with NSNotificationCenter
... Thanks, I'm setting messageTotal to a badge on a UIButton, do you know how I can refresh the button with the new badge count? The code to display the image in viewDidLoad is UIBarButtonItem *eRXButton = [BarButtonBadge barButtonWithImage:buttonImage badgeString:@"1" atRight:NO toTarget:self...
if A vs if A is not None:
...
@cedbeu, Seems to depend on the value of A. I tested now python -m timeit -s"a=0" "if a: pass" "else: pass" is faster than python -m timeit -s"a=0" "if a is None: pass" "else: pass" but python -m timeit -s"a=1" "if a: pass" "else: pass" is slower. Might be platform dependant, s...
What is “X-Content-Type-Options=nosniff”?
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It prevents the browser from doing MIME-type sniffing. Most browsers are now respecting this header, including Chrome/Chromium, Edge, IE >= 8.0, Firefox >= 50 and Opera >= 13. See :
https://blogs.msdn.com/b/ie/archive/2008/09/02/ie8-security-part-vi-beta-2-update.aspx?Redirected=true
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How to attach javadoc or sources to jars in libs folder?
...s. Any .jar files in the /libs folder are added to the build configuration now. Unfortunately Android Dependencies classpath container is non modifiable.
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