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Bash: infinite sleep (infinite blocking)
...to TYPE_MAXIMUM (time_t).
The actual value of TYPE_MAXIMUM (time_t) is not set in the standard (even sizeof(time_t) isn't); so, for the sake of example let's pick x86-64 from a recent Linux kernel.
This is TIME_T_MAX in the Linux kernel, which is defined (time.h) as:
(time_t)((1UL << ((size...
In Java, what does NaN mean?
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Taken from this page:
"NaN" stands for "not a number". "Nan"
is produced if a floating point
operation has some input parameters
that cause the operation to produce
some undefined result. For example,
0.0 divided by 0...
Display / print all rows of a tibble (tbl_df)
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Extending @BLT's answer, you can set n = Inf to print all rows.
– seasmith
Feb 2 '17 at 21:38
10
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Reason for Column is invalid in the select list because it is not contained in either an aggregate f
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Your query will work in MYSQL if you set to disable ONLY_FULL_GROUP_BY server mode (and by default It is). But in this case, you are using different RDBMS. So to make your query work, add all non-aggregated columns to your GROUP BY clause, eg
SELECT col1, col2,...
Remove duplicate lines without sorting [duplicate]
...ed and the line printed if the content of that node was not (!) previously set.
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Is it better in C++ to pass by value or pass by constant reference?
...the new value of g.i from memory.
For more pratical rules, here is a good set of rules found in Move Constructors article (highly recommended reading).
If the function intends to change the argument as a side effect, take it by non-const reference.
If the function doesn't modify its argument and...
Simple way to find if two different lists contain exactly the same elements?
... want to check independent of order, you could copy all of the elements to Sets and use equals on the resulting Sets:
public static <T> boolean listEqualsIgnoreOrder(List<T> list1, List<T> list2) {
return new HashSet<>(list1).equals(new HashSet<>(list2));
}
A lim...
How can I pad an int with leading zeros when using cout
...ip>
#include <iostream>
int main()
{
std::cout << std::setfill('0') << std::setw(5) << 25;
}
the output will be
00025
setfill is set to the space character (' ') by default. setw sets the width of the field to be printed, and that's it.
If you are interested i...
How can I use interface as a C# generic type constraint?
...string S { get; } }
public class Actual : IActual { public string S { get; set; } }
Now there's nothing stopping you from calling Foo thus:
Foo<Actual>();
The Actual class, after all, satisfies the IBase constraint.
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How to find Unused Amazon EC2 Security groups
...es, I only have a single region and the AWS scripts have their home region set via environmental variables. I'd be interested in seeing a multi-region version of this script.
– Ray
Apr 15 '15 at 21:28
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