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Why does base64 encoding require padding if the input length is not divisible by 3?
...t idea, as long as we know the length of the data we're encoding before we start encoding it. But what if, instead of words, we were encoding chunks of video from a live camera? We might not know the length of each chunk in advance.
If the protocol used padding, there would be no need to transmit a...
How to suppress scientific notation when printing float values?
...his:
>>> '{:.20f}'.format(a)
'-0.00000000000000007186'
Update
Starting in Python 3.6, this can be simplified with the new formatted string literal, as follows:
>>> f'{a:.20f}'
'-0.00000000000000007186'
...
How to stop an app on Heroku?
...
In Rails, if your Procfile has a line started with web, then use heroku ps:scale web=0, else you may receive no such process type app defined in Procfile.
– Minh Triet
Sep 18 '14 at 7:51
...
Parcelable encountered IOException writing serializable object getactivity()
...
@user2896762: In general, on Android, start from the bottom of the stack trace and work your way up to the last Caused by line. That's usually going to point to the specific problem. All the other stanzas of the stack trace represent wrapped exceptions around the...
Where does Scala look for implicits?
...ou make an Ordering for your own class that is automatically found?
Let's start with the implementation:
class A(val n: Int)
object A {
implicit val ord = new Ordering[A] {
def compare(x: A, y: A) = implicitly[Ordering[Int]].compare(x.n, y.n)
}
}
So, consider what happens when yo...
jQuery get textarea text
Recently I have started playing with jQuery, and have been following a couple of tutorials. Now I feel slightly competent with using it (it's pretty easy), and I thought it would be cool if I were able to make a 'console' on my webpage (as in, you press the ` key like you do in FPS games, etc.), a...
Conditional Replace Pandas
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@BMichell I think your solution might start giving you warnings in 0.13, didn't have a chance to try yet
– lowtech
Feb 6 '14 at 19:14
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Failed to build gem native extension (installing Compass)
... This worked for me with one addition - you have to actually start XCODE so that you can accept the license agreement and let it finish setup. Might be worth tagging onto your answer.
– Bruford
Jun 17 '15 at 14:06
...
Correct way to define Python source code encoding
...g/software/emacs/manual/html_node/emacs/… . In brief, the format for the start of the file is: <prefix>-*- var: value[; ...] -*-.
– ivan_pozdeev
Feb 23 '16 at 12:08
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Prevent flicker on webkit-transition of webkit-transform [duplicate]
...make sure whatever specific element you plan on transforming in the future starts out rendered in 3d so the browsers doesn't have to switch in and out of rendering modes. Adding
-webkit-transform: translateZ(0)
(or either of the options already mentioned) to the animated element will accomplish ...