大约有 43,000 项符合查询结果（耗时：0.0730秒） [XML]
Using Default Arguments in a Function
...is way, you can make a call like foo('blah', null, 'non-default y value'); and have it work as you want, where the second parameter $x still gets its default value.
With this method, passing a null value means you want the default value for one parameter when you want to override the default value ...
What regex will match every character except comma ',' or semi-colon ';'?
...tion you are using. Most of them have a Split method that takes delimiters and split by them. You might want to use that one with a "normal" (without ^) character class:
[,;]+
share
|
improve this...
Multiple aggregations of the same column using pandas GroupBy.agg()
Is there a pandas built-in way to apply two different aggregating functions f1, f2 to the same column df["returns"] , without having to call agg() multiple times?
...
How do I update the notification text for a foreground service in Android?
I have a foreground service setup in Android. I would like to update the notification text. I am creating the service as shown below.
...
width:auto for fields
...re's the best I could do after a few minutes. It's 1px off in FF, Chrome, and Safari, and perfect in IE. (The problem is #^&* IE applies borders differently than everyone else so it's not consistent.)
<div style='padding:30px;width:200px;background:red'>
<form action='' method='pos...
Regex for string not ending with given suffix
...sily extend this with other characters, since this checking for the string and isn't a character class.
.*(?<!ab)$
This would match anything that does not end with "ab", see it on Regexr
share
|
...
Is it possible to specify a different ssh port when using rsync?
I have been attempting the following command:
8 Answers
8
...
How to draw an empty plot?
...
@Adam x11() is a cross-platform R command to open a new device. If you have a device open and call plot.new(), the current device will be cleared.
– Joshua Ulrich
Jan 24 '11 at 18:57
...
Regex to match a digit two or four times
...t;-- alternation: four digits or two
\d{2}(?:\d{2})? <-- two digits, and optionally two more
(?:\d{2}){1,2} <-- two digits, times one or two
share
|
improve this answer
|
...
How do I set the default font size in Vim?
...ith Vim. I already made research on the web, but all the solutions I found and tried did not work.
5 Answers
...