大约有 16,000 项符合查询结果（耗时：0.0378秒） [XML]
When should I use a List vs a LinkedList
When is it better to use a List vs a LinkedList ?
15 Answers
15
...
Manually raising (throwing) an exception in Python
How can I raise an exception in Python so that it can later be caught via an except block?
8 Answers
...
PHP validation/regex for URL
I've been looking for a simple regex for URLs, does anybody have one handy that works well? I didn't find one with the zend framework validation classes and have seen several implementations.
...
Why is null an object and what's the difference between null and undefined?
... name? (*)
JavaScript: name? What's a name? I don't know what you're talking about. You haven't ever mentioned any name before. Are you seeing some other scripting language on the (client-)side?
name = null;
You: What is name?
JavaScript: I don't know.
In short; undefined is where no notion of the ...
Best way to iterate through a Perl array
Which is the best implementation(in terms of speed and memory usage) for iterating through a Perl array? Is there any better way? ( @Array need not be retained).
...
Should “node_modules” folder be included in the git repository
I'm wondering if we should be tracking node_modules in our repo or doing an npm install when checking out the code?
9 Answe...
The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or
...http://cran.r-project.org/doc/manuals/R-lang.html#Indexing
R has three basic indexing operators, with syntax displayed by the following examples
x[i]
x[i, j]
x[[i]]
x[[i, j]]
x$a
x$"a"
For vectors and matrices the [[ forms are rarely used, although they have some slig...
MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
First let me mention that I've gone through many suggested questions and found no relevent answer. Here is what I'm doing.
...
Comparing strings by their alphabetical order
I want to compare the two above string by their alphabetic order (which in this case "Project" then "Sunject" as "P" comes before "S").
Does anyone know how to do that in Java?
...
What is the difference between Scala's case class and class?
I searched in Google to find the differences between a case class and a class . Everyone mentions that when you want to do pattern matching on the class, use case class. Otherwise use classes and also mentioning some extra perks like equals and hash code overriding. But are these the only reasons...