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What does $@ mean in a shell script?
...glinesses they have.
wrappedProgram "$*"
# ^^^ this will hand over exactly one argument, containing all
# original arguments, separated by single spaces.
wrappedProgram $*
# ^^^ this will join all arguments by single spaces as well and
# will then split the string as the shell does on the co...
In C/C++ what's the simplest way to reverse the order of bits in a byte?
... creating the lookup table does still require another solution. (Of course one might do it by hand, but that's error-prone and time-consuming…)
– Arkku
Apr 8 '10 at 19:52
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How to do multiple arguments to map function where one remains the same in python?
...
One option is a list comprehension:
[add(x, 2) for x in [1, 2, 3]]
More options:
a = [1, 2, 3]
import functools
map(functools.partial(add, y=2), a)
import itertools
map(add, a, itertools.repeat(2, len(a)))
...
Repeat String - Javascript
...l - it's just "clever" because it uses Array stuff to get
String things done. When I wrote "less process" I definitely meant
"less code" because, as others have noted in subsequent answers, it
performs like a pig. So don't use it if speed matters to you.
I'd put this function onto the String...
Convert a Python list with strings all to lowercase or uppercase
...ns strings. Is there a python function that can convert all the strings in one pass to lowercase and vice versa, uppercase?
...
Adding one day to a date
My code to add one day to a date returns a date before day adding:
2009-09-30 20:24:00 date after adding one day SHOULD be rolled over to the next month: 1970-01-01 17:33:29
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What does the [Flags] Enum Attribute mean in C#?
...s powers of two. If you omit the numeric values, the enum will not work as one might expect in bitwise operations, because by default the values start with 0 and increment.
Incorrect declaration:
[Flags]
public enum MyColors
{
Yellow, // 0
Green, // 1
Red, // 2
Blue // ...
How to print last two columns using awk
...le
Note: this works only if at least two columns exist. On records with one column you will get a spurious "-1 column1"
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How to handle exceptions in a list comprehensions?
...l the statements you want, so delegating the evaluation of the exception-prone sub-expression to a function, as you've noticed, is one feasible workaround (others, when feasible, are checks on values that might provoke exceptions, as also suggested in other answers).
The correct responses to the qu...
How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
...tination port" header field.
Now, there are two answers to your question, one for stateful protocols and one for stateless protocols.
For a stateless protocol (ie UDP), there is no problem because "connections" don't exist - multiple people can send packets to the same port, and their packets will...