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Fastest way to tell if two files have the same contents in Unix/Linux?
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How can I add more commands than only one? I want to copy a file and roboot.
– feedc0de
Jun 14 '14 at 15:09
9
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Add st, nd, rd and th (ordinal) suffix to a number
... 11, 12 or 13 use -th (e.g. 11th, pronounced eleventh, 112th,
pronounced one hundred [and] twelfth)
th is used for all other numbers (e.g. 9th, pronounced ninth).
The following JavaScript code (rewritten in Jun '14) accomplishes this:
function ordinal_suffix_of(i) {
var j = i % 10,
...
Find the Smallest Integer Not in a List
...n the programming language) and allows the scan for the first false to be done more quickly.
This is how / why the algorithm works.
Suppose that the N numbers in the list are not distinct, or that one or more of them is greater than N. This means that there must be at least one number in the ra...
Why use non-member begin and end functions in C++11?
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@JonathanMDavis: Arrays are not pointers. And for everyone: For the sake of ending this ever-prominent confusion, stop referring to (some) pointers as "decayed arrays". There's no such terminology in the language, and there really isn't a use for it. Pointers are pointers, arrays...
What's the difference between the 'ref' and 'out' keywords?
...ual reference to someobject gets sent to the method. So you now have only one reference to the data:
(outside method) reference1 => someobject;
(inside method) reference1 => someobject;
But what does this mean? It acts exactly the same as sending someobject not by ref except for two main...
How is this fibonacci-function memoized?
...(n-2), the function itself gets called, twice from the top, causing the exponential explosion. But with that trick, we set out a list for the interim results, and go "through the list":
fib n = (xs!!(n-1)) + (xs!!(n-2)) where xs = 0:1:map fib [2..]
The trick is to cause that list to get created, ...
What is the difference between a weak reference and an unowned reference?
...== CreditCard
The Customer and CreditCard example shows a situation where one property that is allowed to be nil and another property that cannot be nil has the potential to cause a strong reference cycle. This scenario is best resolved with an unowned reference.
Note from Apple:
Weak references m...
Python loop that also accesses previous and next values
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This should do the trick.
foo = somevalue
previous = next_ = None
l = len(objects)
for index, obj in enumerate(objects):
if obj == foo:
if index > 0:
previous = objects[index - 1]
if index < (l - 1):
next_ = objects[index + 1]
Here's t...
Why does comparing strings using either '==' or 'is' sometimes produce a different result?
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@Крайст: there is only a single None value. So it always has the same id.
– SilentGhost
Oct 29 '12 at 9:57
20
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Java NIO FileChannel versus FileOutputstream performance / usefulness
...as been that this buffer size is ripe for tuning. I've settled on 4KB for one part of my application, 256KB for another. I suspect your code is suffering with such a large buffer. Run some benchmarks with buffers of 1KB, 2KB, 4KB, 8KB, 16KB, 32KB and 64KB to prove it to yourself.
Don't perform j...