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What are rvalues, lvalues, xvalues, glvalues, and prvalues?
... began with the move semantics. Once we have expressions that can be moved and not copied, suddenly easy to grasp rules demanded distinction between expressions that can be moved, and in which direction.
From what I guess based on the draft, the r/l value distinction stays the same, only in the con...
How do I check if a string is unicode or ascii?
...pes. A Unicode string may consist of purely characters in the ASCII range, and a bytestring may contain ASCII, encoded Unicode, or even non-textual data.
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Border length smaller than div width?
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if the width of the bottom border is 50% and you want it centered, the style needs to be left: 25% since it will be 25% + 50% + 25%
– skift
Nov 7 '14 at 19:02
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Convert a Unicode string to a string in Python (containing extra symbols)
...hat) containing some currency symbols to a "Python string" (whatever ...) and you think that a remove-some-diacritics delete-other-non-ascii characters kludge answers his question???
– John Machin
Jul 30 '09 at 16:25
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Concatenate a vector of strings/character
...:
stri_paste(letters, collapse='')
## [1] "abcdefghijklmnopqrstuvwxyz"
And some benchmarks:
require(microbenchmark)
test <- stri_rand_lipsum(100)
microbenchmark(stri_paste(test, collapse=''), paste(test,collapse=''), do.call(paste, c(as.list(test), sep="")))
Unit: microseconds
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What is the correct way to start a mongod service on linux / OS X?
I've installed mongodb and have been able to run it, work with it, do simple DB read / write type stuff. Now I'm trying to set up my Mac to run mongod as a service.
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Why should hash functions use a prime number modulus?
...g the "component parts" of the input (characters in the case of a string), and multiplying them by the powers of some constant, and adding them together in some integer type. So for example a typical (although not especially good) hash of a string might be:
(first char) + k * (second char) + k^2 * ...
How do I create a nice-looking DMG for Mac OS X using command-line tools?
...cation. I want it to be a disk image (DMG), with a predefined size, layout and background image.
14 Answers
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How to debug Angular JavaScript Code
...tarang is no longer being maintained. Tested in various versions of Chrome and it does not work.)
Here is the the link for a description and demo:
Introduction of Angular JS Batarang
Download Chrome plugin from here: Chrome plugin for debugging AngularJS
You can also use ng-inspect for debugging ang...
How to convert Nonetype to int or string?
...t's your code, figure out how you're getting None when you expect a number and stop that from happening.
If it's someone else's code, find out the conditions under which it gives None and determine a sensible value to use for that, with the usual conditional code:
result = could_return_none(x)
if...