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Efficiency of purely functional programming
...nput, and that the input consists of a sequence of atoms from an unbounded set of possible atoms, rather than a fixed size set. And the paper only establishes (lower bound) results for an impure algorithm of linear running time; for problems that require a greater running time, it is possible that t...
Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes
... HTTP request parameter based on component's own client ID and then either setting it as submitted value in case of EditableValueHolder components or queueing a new ActionEvent in case of ActionSource components), perform conversion, validation and updating the model values (EditableValueHolder comp...
What's the fastest way to loop through an array in JavaScript?
I learned from books that you should write for loop like this：
22 Answers
22
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Circular list iterator in Python
...e its generator starts, since iterable is only "good for one pass over the set of values".
– Jacob Krall
May 17 '16 at 2:30
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How to list containers in Docker
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The Docker command set is simple and holds together well:
docker stack ls
docker service ls
docker image ls
docker container ls
Teaching the aliases first is confusing. Once you understand what's going on, they can save some keystrokes:
doc...
Git - How to use .netrc file on Windows to save user and password
...c file in %HOME%
If you are using Windows 7/10, in a CMD session, type:
setx HOME %USERPROFILE%
and the %HOME% will be set to 'C:\Users\"username"'.
Go that that folder (cd %HOME%) and make a file called '_netrc'
Note: Again, for Windows, you need a '_netrc' file, not a '.netrc' file.
Its con...
Removing duplicates from a list of lists
...:
import itertools
k = [[1, 2], [4], [5, 6, 2], [1, 2], [3], [4]]
def doset(k, map=map, list=list, set=set, tuple=tuple):
return map(list, set(map(tuple, k)))
def dosort(k, sorted=sorted, xrange=xrange, len=len):
ks = sorted(k)
return [ks[i] for i in xrange(len(ks)) if i == 0 or ks[i] != k...
Automatically remove Subversion unversioned files
Does anybody know a way to recursively remove all files in a working copy that are not under version control? (I need this to get more reliable results in my automatic build VMware.)
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How do I rename all files to lowercase?
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A fish shell version:
for old in *
set new (echo $old | tr '[A-Z]' '[a-z]')
mv $old $new
end
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NSString with \n or line break
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If your string is going in a UIView (e.g a UILabel), you also need to set the number of lines to 0
myView.numberOfLines=0;
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