大约有 30,000 项符合查询结果（耗时：0.0473秒） [XML]
Make xargs execute the command once for each line of input
...ut into "arguments"; and
how many arguments to pass the child command at a time.
To test xargs' behavior, we need an utility that shows how many times it's being executed and with how many arguments. I don't know if there is a standard utility to do that, but we can code it quite easily in bash:
...
Algorithm to detect overlapping periods [duplicate]
I've to detect if two time periods are overlapping.
Every period has a start date and an end date.
I need to detect if my first time period (A) is overlapping with another one(B/C).
In my case, if the start of B is equal to the end of A, they are not overlapping(the inverse too)
I found th...
How can I export tables to Excel from a webpage [closed]
...ect to PDF as well. And, once you get it configured, it just works, every time.
UPDATE - September 15, 2016: TableTools has been discontinued in favor of a new plugin called "buttons" These tools perform the same functions as the old TableTools extension, but are FAR easier to install and they m...
WSDL vs REST Pros and Cons
...st 3 years ago. I don't think heavy-weight is necessarily a bad thing, sometimes you want Holyfield, but other times Pacquiao gets the job done. Don't take it the wrong way, and nothing personal :)
– Kekoa
Apr 9 '12 at 20:43
...
is_file or file_exists in PHP
..._readable');
function benchmark($funcName) {
$numCycles = 10000;
$time_start = microtime(true);
for ($i = 0; $i < $numCycles; $i++) {
clearstatcache();
$funcName('path/to/file.php'); // or 'path/to/file.php' instead of __FILE__
}
$time_end = microtime(true);
...
Setting Objects to Null/Nothing after use in .NET
... lot of people (including myself when I was younger) spend wayyyy too much time making the "perfect" algorithm, only to have it save 0.1ms in 100,000 iterations all while readability was completely shot.
– Brent Rittenhouse
Aug 3 '17 at 17:10
...
How do I prevent site scraping? [closed]
...ecursively follow links to other pages in order to get data. These are sometimes used for targeted scraping to get specific data, often in combination with a HTML parser to extract the desired data from each page.
Shell scripts: Sometimes, common Unix tools are used for scraping: Wget or Curl to dow...
SVN+SSH, not having to do ssh-add every time? (Mac OS)
... Once the ~/.ssh/config is there, no need to run the ssh-add command everytime after reboot the machine.
– hailong
Nov 16 '16 at 4:30
add a comment
|
...
How to count TRUE values in a logical vector
...ger for comparison:
z <- sample(c(TRUE,FALSE),1000000,rep=TRUE)
system.time(sum(z))
user system elapsed
0.03 0.00 0.03
system.time(length(z[z==TRUE]))
user system elapsed
0.75 0.07 0.83
system.time(length(which(z)))
user system elapsed
1.34 0.28 1.64
s...
Parse JSON in C#
I'm trying to parse some JSON data from the Google AJAX Search API. I have this URL and I'd like to break it down so that the results are displayed. I've currently written this code, but I'm pretty lost in regards of what to do next, although there are a number of examples out there with simplifie...