大约有 26,000 项符合查询结果（耗时：0.0300秒） [XML]
iTerm2: How to expand split pane temporarily?
... @Alper Go to Preferences > Keys > Action > Select Menu Item > View > Maximize Active Pane and enter a custom shortcut.
– Qaz
Dec 14 '17 at 0:13
1
...
Convert an enum to List
...
Use Enum's static method, GetNames. It returns a string[], like so:
Enum.GetNames(typeof(DataSourceTypes))
If you want to create a method that does only this for only one type of enum, and also converts that array to a List, you can write s...
Cancel/kill window.setTimeout() before it happens
...e and if the user gets clicking around the action can occur at incorrect time intervals.
2 Answers
...
How to make execution pause, sleep, wait for X seconds in R?
...r example, from ?Sys.sleep
testit <- function(x)
{
p1 <- proc.time()
Sys.sleep(x)
proc.time() - p1 # The cpu usage should be negligible
}
testit(3.7)
Yielding
> testit(3.7)
user system elapsed
0.000 0.000 3.704
...
Create a variable name with “paste” in R?
...
Why was this so hard to find!
– lamecicle
Oct 30 '14 at 12:53
25
assign(paste0...
How to make an AJAX call without jQuery?
...quest.DONE == 4
if (xmlhttp.status == 200) {
document.getElementById("myDiv").innerHTML = xmlhttp.responseText;
}
else if (xmlhttp.status == 400) {
alert('There was an error 400');
}
else {
alert('some...
Why does String.split need pipe delimiter to be escaped?
...t did not work correctly when I did not escape the pipe delimiter in split method, but it worked correctly after I escaped the pipe as below.
...
Getting parts of a URL (Regex)
...
A single regex to parse and breakup a
full URL including query parameters
and anchors e.g.
https://www.google.com/dir/1/2/search.html?arg=0-a&arg1=1-b&arg3-c#hash
^((http[s]?|ftp):\/)?\/?([^:\/\s]+)((\/\w+)*\/)([\w\-\.]+[^#?\s]+)(.*)?(#[\w\-]+)?$
RexEx positions:
...
How to test if a string is basically an integer in quotes using Ruby
...self =~ /\A[-+]?[0-9]+\z/)
end
end
An edited version according to comment from @wich:
class String
def is_i?
/\A[-+]?\d+\z/ === self
end
end
In case you only need to check positive numbers
if !/\A\d+\z/.match(string_to_check)
#Is not a positive number
else
#...
SQL SELECT speed int vs varchar
I'm in the process of creating a table and it made me wonder.
9 Answers
9
...