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What's the difference between “static” and “static inline” function?
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98
By default, an inline definition is only valid in the current translation unit.
If the storage...
Accessing last x characters of a string in Bash
... line:
$ foo=1234567890
$ echo $foo | grep -o ...$
890
To make it optionally get the 1 to 3 last chars, in case of strings with less than 3 chars, you can use egrep with this regex:
$ echo a | egrep -o '.{1,3}$'
a
$ echo ab | egrep -o '.{1,3}$'
ab
$ echo abc | egrep -o '.{1,3}$'
abc
$ echo abcd ...
When is memoization automatic in GHC Haskell?
...2' = \n -> (!!) (filter odd [1..]) n
(Note: The Haskell 98 report actually describes a left operator section like (a %) as equivalent to \b -> (%) a b, but GHC desugars it to (%) a. These are technically different because they can be distinguished by seq. I think I might have submitted a G...
Change the name of the :id parameter in Routing resources for Rails
...:name', :to => 'sites#show', :as => site
end
You would have to manually add all the routes that resources automatically creates for you, but it would achieve what you're looking for. You could also effectively use the :controller option with scope and additional scope blocks to take out some...
What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
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devnulldevnull
98.2k2727 gold badges195195 silver badges201201 bronze badges
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Pointers in C: when to use the ampersand and the asterisk?
... work differently when you're working with arrays, strings or when you're calling functions with a pointer copy of a variable. It's difficult to see a pattern of logic inside all of this.
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Is Ruby pass by reference or by value?
...en I perform a save on the @user object I lose the errors that were initially stored in the lang_errors variable.
13 An...
What is the difference between a string and a byte string?
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@orety they do have to be encoded somehow internally for exactly that reason, but this isn't expos3s to you from Python code much like you don't have to care about how floating point numbers are stored.
– lvc
Nov 5 '17 at 22:43
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Show data on mouseover of circle
...u don't need the mousehandler. The code would be something like
vis.selectAll("circle")
.data(datafiltered).enter().append("svg:circle")
...
.append("svg:title")
.text(function(d) { return d.x; });
If you want fancier tooltips, you could use tipsy for example. See here for an example....
Filtering a list based on a list of booleans
...i for (i, v) in zip(list_a, fil) if v] #winner
100000 loops, best of 3: 1.98 us per loop
>>> list_a = [1, 2, 4, 6]*100
>>> fil = [True, False, True, False]*100
>>> %timeit list(compress(list_a, fil)) #winner
10000 loops, best of 3: 24.3 us per loop
>>&...