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How does zip(*[iter(s)]*n) work in Python?
...erences to the same iterator and zip() makes 3-tuples of the integers—in order—from each reference to the iterator:
1,2,3,4,5,6,7,8,9 1,2,3,4,5,6,7,8,9 1,2,3,4,5,6,7,8,9
^ ^ ^
^ ^ ^
^ ...
JavaScript for…in vs for
...u use for in to loop over property names in an object, the results are not ordered. Worse: You might get unexpected results; it includes members inherited from the prototype chain and the name of methods.
Everything but the properties can be filtered out with .hasOwnProperty. This code sample does ...
Macro vs Function in C
...ator though... overlooked that... But it might still be less readable.)
Order of Operations: (courtesy of @ouah)
#define min(a,b) (a < b ? a : b)
min(x & 0xFF, 42)
gets expanded to:
(x & 0xFF < 42 ? x & 0xFF : 42)
But & has lower precedence than <. So 0xFF < 42 ...
Concurrent HashSet in .NET Framework?
...
@Ralf Well, it's a set, not a list, as it's unordered.
– Servy
Sep 20 '13 at 18:18
11
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Property getters and setters
...
In order to override setter and getter for swift variables use the below given code
var temX : Int?
var x: Int?{
set(newX){
temX = newX
}
get{
return temX
}
}
We need to keep the value of va...
Automapper - how to map to constructor parameters instead of property setters
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Tried something similar Mapper.CreateMap<Order, OrderViewModel>().ConstructUsing(x => new OrderViewModel(this)); ... Get a "The call is ambiguos" compiler error
– Chris Klepeis
Mar 29 '12 at 17:49
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How to set the prototype of a JavaScript object that has already been instantiated?
...mutability means implementations must check for cyclic prototype chains in order to avoid ilooping. [constant checks for infinite recursion are required]
Finally, mutating __proto__ on an existing object may break non-generic methods in the new prototype object, which cannot possibly work on th...
Best algorithm for detecting cycles in a directed graph [closed]
...s, I suspect that at some point you are going to sort them into a proposed order of execution.
If that's the case, then a topological sort implementation may in any case detect cycles. UNIX tsort certainly does. I think it is likely that it is therefore more efficient to detect cycles at the same t...
How do I get a Cron like scheduler in Python? [closed]
..." way to do this because some other process would have to launch python in order to run your solution. Every platform will have one or twenty different ways to launch processes and monitor their progress. On unix platforms, cron is the old standard. On Mac OS X there is also launchd, which combin...
How do you round a float to two decimal places in jruby
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This doesn't work. In order to get it to work you need to account for any size number. Using the pattern implemented here you can: def float_of_2_decimal(float_n) num = float_n.to_s.split('.') num[1] = num[1][0..1] num...