大约有 46,000 项符合查询结果（耗时：0.0668秒） [XML]
How do I replace the *first instance* of a string in .NET?
I want to replace the first occurrence in a given string.
14 Answers
14
...
How can I String.Format a TimeSpan object with a custom format in .NET?
What is the recommended way of formatting TimeSpan objects into a string with a custom format?
19 Answers
...
How to get the first element of the List or Set? [duplicate]
...
In Java >=8 you could also use the Streaming API:
Optional<String> first = set.stream().findFirst();
(Useful if the Set/List may be empty.)
share
|
improve this answer
...
How can I check if a single character appears in a string?
...
You can use string.indexOf('a').
If the char a is present in string :
it returns the the index of the first occurrence of the character in
the character sequence represented by this object, or -1 if the
character does not occur...
In Python, how do I split a string and keep the separators?
...e: Well, it's documented: docs.python.org/library/re.html#re.split: "Split string by the occurrences of pattern. If capturing parentheses are used in pattern, then the text of all groups in the pattern are also returned as part of the resulting list."
– Vinay Sajip
...
Why does Oracle 9i treat an empty string as NULL?
...efore there was a SQL standard, Oracle made the design decision that empty strings in VARCHAR/VARCHAR2 columns were NULL and that there was only one sense of NULL (there are relational theorists that would differentiate between data that has never been prompted for, data where the answer exists but ...
Java: Get last element after split
I am using the String split method and I want to have the last element.
The size of the Array can change.
12 Answers
...
How to convert wstring into string?
The question is how to convert wstring to string?
16 Answers
16
...
Switch statement for string matching in JavaScript
...
You can't do it in a switch unless you're doing full string matching; that's doing substring matching. (This isn't quite true, as Sean points out in the comments. See note at the end.)
If you're happy that your regex at the top is stripping away everything that you don't want ...
Get a list of resources from classpath directory
...e names from a given classpath directory, something like a method List<String> getResourceNames (String directoryName) .
...