大约有 30,000 项符合查询结果（耗时：0.0405秒） [XML]
How do you test running time of VBA code?
Is there code in VBA I can wrap a function with that will let me know the time it took to run, so that I can compare the different running times of functions?
...
Why are exclamation marks used in Ruby methods?
In Ruby some methods have a question mark ( ? ) that ask a question like include? that ask if the object in question is included, this then returns a true/false.
...
Why is creating a Thread said to be expensive?
...vement if you use a thread pool versus creating/starting a new thread each time. (And he makes the point that this is all relative ...)
(The above assumes "native threads" rather than "green threads", but modern JVMs all use native threads for performance reasons. Green threads are possibly che...
How to sort an array in descending order in Ruby
...'s what I found out:
#!/usr/bin/ruby
require 'benchmark'
ary = []
1000.times {
ary << {:bar => rand(1000)}
}
n = 500
Benchmark.bm(20) do |x|
x.report("sort") { n.times { ary.sort{ |a,b| b[:bar] <=> a[:bar] } } }
x.report("sort reverse") { n.times { ary...
Python nonlocal statement
What does the Python nonlocal statement do (in Python 3.0 and later)?
9 Answers
9
...
How do I format a long integer as a string without separator in Java?
Simple question, but I'll bet that asking on here will probably be more straight forward than trying to understand the documentation for MessageFormat :
...
How do I get the size of a java.sql.ResultSet?
Shouldn't this be a pretty straightforward operation? However, I see there's neither a size() nor length() method.
15 A...
I forgot the password I entered during postgres installation
I either forgot or mistyped (during the installation) the password to the default user of Postgres. I can't seem to be able to run it and I get the following error:
...
How can I convert a DateTime to the number of seconds since 1970?
I'm trying to convert a C# DateTime variable to Unix time, ie, the number of seconds since Jan 1st, 1970. It looks like a DateTime is actually implemented as the number of 'ticks' since Jan 1st, 0001.
...
Populate data table from data reader
...public void SQLCommandVsAddaptor()
{
long AdapterFillLargeTableTime, readerLoadLargeTableTime, AdapterFillMediumTableTime, readerLoadMediumTableTime, AdapterFillSmallTableTime, readerLoadSmallTableTime, AdapterFillTinyTableTime, readerLoadTinyTableTime;
string LargeTableToFill =...