大约有 40,000 项符合查询结果（耗时：0.0610秒） [XML]
How to measure time taken by a function to execute
...ction you're measuring time for
var t1 = performance.now()
console.log("Call to doSomething took " + (t1 - t0) + " milliseconds.")
NodeJs: it is required to import the performance class
Using console.time: (non-standard) (living standard)
console.time('someFunction')
someFunction() // W...
Shell script to delete directories older than n days
..., you can replace the ; with + and it will do the equivalent of the xargs call for you, passing as many files as will fit on each exec system call:
find . -type d -ctime +10 -exec rm -rf {} +
share
|
...
Difference between C++03 throw() specifier C++11 noexcept
...Exception specifiers were deprecated because exception specifiers are generally a terrible idea. noexcept was added because it's the one reasonably useful use of an exception specifier: knowing when a function won't throw an exception. Thus it becomes a binary choice: functions that will throw and f...
Look up all descendants of a class in Ruby
... @AmolPujari p ObjectSpace.each_object(Class) will print out all the classes. You can also get the descendants of any class you want by substutiting its name for self in the line of code in the method.
– BobRodes
Apr 3 '19 at 20:38
...
How to not run an example using roxygen2?
...answer instead of dontrun. From ?example 'donttest encloses code that typically should be run, but not during package checking.' whereas 'dontrun encloses code that should not be run.' I also got a comment by cran maintainers to switch from dontrun to donttest.
– Julian Karch
...
How do you run multiple programs in parallel from a bash script?
... ./run_script1 $ARR & done P1=$! wait $P1 echo "INFO: Execution of all background processes in the for loop has completed.."
– Yash
Oct 22 '18 at 17:18
...
jQuery attr vs prop?
...
Unfortunately none of your links work :(
Some insight though, attr is for all attributes. prop is for properties.
In older jQuery versions (<1.6), we just had attr. To get to DOM properties such as nodeName, selectedIndex, or defaultValue you had to do something like:
var elem = $("#foo")[0];
if...
How does Task become an int?
...t; (for a logical result of type T in an async manner)
The compiler does all the appropriate wrapping. The point is that you're asynchronously returning urlContents.Length - you can't make the method just return int, as the actual method will return when it hits the first await expression which ha...
Vertically align an image inside a div with responsive height
...
Here is a technique to align inline elements inside a parent, horizontally and vertically at the same time:
Vertical Alignment
1) In this approach, we create an inline-block (pseudo-)element as the first (or last) child of the parent, and set its height property to 100% to take all the height...
Exact time measurement for performance testing [duplicate]
... is the most exact way of seeing how long something, for example a method call, took in code?
7 Answers
...