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Difference between java.lang.RuntimeException and java.lang.Exception
Someone please explain the difference between java.lang.RuntimeException and java.lang.Exception ? How do I decide which one to extend if I create my own exception?
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How to sort a dataframe by multiple column(s)
... z = c(1, 1, 1, 2))
library(taRifx)
sort(dd, f= ~ -z + b )
If you are one of the original authors of this function, please contact me. Discussion as to public domaininess is here: http://chat.stackoverflow.com/transcript/message/1094290#1094290
You can also use the arrange() function from p...
Python time measure function
...ou change it to a function, it will be:
images = get_images()
bitImage = None
@timeit
def foobar():
nonlocal bigImage
bigImage = ImagePacker.pack(images, width=4096)
drawer.draw(bigImage)
Looks not so great...What if you are in Python 2, which has no nonlocal keyword.
Instead, using the ...
Can I mix MySQL APIs in PHP?
...They are separate APIs and the resources they create are incompatible with one another.
There is a mysqli_close, though.
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Why does base64 encoding require padding if the input length is not divisible by 3?
...me must relate back to bytes.
Base256 fits exactly into this paradigm. One byte is equal to one character in base256.
Base16, hexadecimal or hex, uses 4 bits for each character. One byte can represent two base16 characters.
Base64 does not fit evenly into the byte paradigm (nor does base32...
How to deal with floating point number precision in JavaScript?
...ally need your results to add up exactly, especially when you
work with money: use a special decimal
datatype.
If you just don’t want to see all those extra decimal places: simply
format your result rounded to a fixed
number of decimal places when
displaying it.
If you have no decima...
What is the difference/usage of homebrew, macports or other package installation tools? [closed]
...OS X uses 2.2), PHP and all the extensions you need, then upgrade all with one command. Forget to do the same with Homebrew.
MacPorts support groups.
foo@macpro:~/ port select --summary
Name Selected Options
==== ======== =======
db none db46 none
gcc ...
Android View.getDrawingCache returns null, only null
Would anyone please try to explain to me why
10 Answers
10
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Git error on commit after merge - fatal: cannot do a partial commit during a merge
... you try a message that includes spaces without quotes. Eg. [git commit -m one two three] Correct: [git commit -m "one two three"]
– Skychan
Jun 20 '18 at 21:23
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Why can't I forward-declare a class in a namespace using double colons?
...space - it is a completely different class that has nothing to do with the one you declared here.
Once you get to the point of defining the pre-declared class, you don't need to "reopen" the namespace again. You can define it in the global namespace (or any namespace enclosing your Namespace) as
c...