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boost::flat_map and its performance compared to map and unordered_map
...dering of instructions.
3) parameters
The last problem is people usually test for too few variations of the scenario.
A container performance is affected by:
Allocator
size of contained type
cost of implementation of copy operation, assignment operation, move operation, construction operation, o...
How to run cron job every 2 hours
How can I write a Crontab that will run my /home/username/test.sh script every 2 hours?
5 Answers
...
PowerMockito mock single static method and return object
...s quite advanced feature and typically you don't need
it to write decent tests. However it can be helpful when working with
legacy systems. It is the default answer so it will be used only when
you don't stub the method call.
The default default stubbing strategy is to just return null, 0 or...
How to get a variable value if variable name is stored as string?
...val variable_value="\$$variable_name"
fi
echo "$variable_value"
}
test=123
get_value_of test
# 123
test="\$(echo \"something nasty\")"
get_value_of test
# $(echo "something nasty")
share
|
...
Angular JS break ForEach
...
jsperf.com/angular-foreach-performance test it on your own browser to decide which function you should choose. I have tested on IE11 and it is also as fast as in the screenshot. Also tested Array.some() but it is slower then Array.forEach() on IE11 but could be fa...
LINQ Select Distinct with Anonymous Types
...the public
properties on the type to compute an
object's hash code and test for
equality. If two objects of the same
anonymous type have all the same
values for their properties – the
objects are equal.
So it's totally safe to use the Distinct() method on a query that returns anonymo...
How to use JavaScript regex over multiple lines?
...: http://jsperf.com/javascript-multiline-regexp-workarounds
Using [^]: fastest
Using [\s\S]: 0.83% slower
Using (.|\r|\n): 96% slower
Using (.|[\r\n]): 96% slower
NB: You can also use [^] but it is deprecated in the below comment.
...
Maven project.build.directory
...>${project.artifactId}-${project.version}</finalName>
<testOutputDirectory>${project.build.directory}/test-classes</testOutputDirectory>
<sourceDirectory>${project.basedir}/src/main/java</sourceDirectory>
<scriptSourceDirectory>src/main/...
Difference between a Structure and a Union
...stored at 4 byte addresses and is 4 bytes long. The following union
union test {
int a;
long b;
};
could have a sizeof of 4, and an alignment requirement of 4. Both an union and a struct can have padding at the end, but not at their beginning. Writing to a struct changes only the value o...
The performance impact of using instanceof in Java
...t is a little faster than doing an instanceof, but the difference my quick test found was 10-20ms over 10,000,000 iterations. If "object" isn't an ObjT, though, catching the exception was over 3000x slower - over 31,000ms vs ~10ms for the instanceof.
– Steve
Fe...