大约有 40,000 项符合查询结果(耗时:0.0330秒) [XML]
List distinct values in a vector in R
How can I list the distinct values in a vector where the values are replicative? I mean, similarly to the following SQL statement:
...
Weird “[]” after Java method signature
I looked at some Java code today, and I found some weird syntax:
4 Answers
4
...
How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples g
The following snippet is annotated with the output ( as seen on ideone.com ):
2 Answers
...
Using pg_dump to only get insert statements from one table within database
I'm looking for a way to get all rows as INSERT statements from one specific table within a database using pg_dump in PostgreSQL.
...
Ternary Operator Similar To ?:
I am trying to avoid constructs like this:
5 Answers
5
...
Capitalize or change case of an NSString in Objective-C
I was wondering how to capitalize a string found in an object in an NSMutableArray .
3 Answers
...
cannot load such file — zlib even after using rvm pkg install zlib
I installed zlib package and ruby 1.9.3 using rvm, but whenever I try to install
gems it says
cannot load such file -- zlib
...
When to use leading slash in gitignore
I'm trying to understand more clearly the .gitignore syntax, and in particular as far as https://github.com/github/gitignore gitignores are concerned.
...
Ruby get object keys as array
I am new to Ruby, if I have an object like this
4 Answers
4
...
PHP variables in anonymous functions
I was playing around with anonymous functions in PHP and realized that they don't seem to reach variables outside of them.
Is there any way to get around this problem?
...
