大约有 44,000 项符合查询结果（耗时：0.0485秒） [XML]
What are the differences between vector and list data types in R?
...
As someone who's just gotten into R, but comes from a C/Java/Ruby/PHP/Python background, here's how I think of it.
A list is really an array + a hashmap. It's a PHP associative array.
> foo = list(bar='baz')
> foo[1]
'baz'
> foo$bar
'baz'
> foo[['bar']]
'baz'
A vector is a f...
Citing the author of a blockquote using Markdown syntax
...edia. Retrieved 23:45, November 20, 2016](https://en.wikipedia.org/w/index.php?title=Test-driven_development&oldid=750634597)
Produces the following:
Test-driven development (TDD) is a software development process that relies on the repetition of a very short development cycle: requirement...
How do I add a tool tip to a span element?
...article aided in my confusion : htmlgoodies.com/tutorials/html_401/article.php/3479661/… where it says that the tooltip works for the "text"
– Augiwan
Jan 23 '13 at 13:50
1
...
Choosing a Java Web Framework now? [closed]
...ve it a shot. I really like it, Play is a great fit between something like PHP and the heavy duty Java frameworks like Spring.
The things I like most about play are:
Very easy to get a play application off the ground, you have to go pretty far with coding and configuration to get a simple crud ap...
How can prepared statements protect from SQL injection attacks?
...nd even alter it, as every SQL injection example shows it (all examples in PHP/Mysql):
$expected_data = 1;
$query = "SELECT * FROM users where id=$expected_data";
will produce a regular query
SELECT * FROM users where id=1
while this code
$spoiled_data = "1; DROP TABLE users;"
$query ...
Having links relative to root?
...tml#h-12.4.
Suggested reading:
http://www.motive.co.nz/glossary/linking.php
http://www.communitymx.com/content/article.cfm?cid=AEDCC52C4AD230AD
share
|
improve this answer
|
...
scala vs java, performance and memory? [closed]
...appropriate comparison web page is - shootout.alioth.debian.org/u64q/scala.php
– igouy
May 6 '11 at 15:08
|
show 4 more comments
...
Difference between a Message Broker and an ESB
...r in a few lines, you can view my post here : http://soabus.org/viewtopic.php?f=3&t=13 . The fundamental construct inside the IIB runtime is called the Logical Message Tree (LMT). Everything that the developer wants to do is some type of operation on the LMT. ESQL is the most efficient language...
How to echo with different colors in the Windows command line
... check carlos' color function -> http://www.dostips.com/forum/viewtopic.php?f=3&t=4453
share
|
improve this answer
|
follow
|
...
What is the Sign Off feature in Git for?
...s and
associated meaning for them.
See: https://git.wiki.kernel.org/index.php/CommitMessageConventions
Moral of the story
It is my impression that, although the initial motivation for this
particular metadata was some legal issues (judging by the other
answers), the practice of such metadata has ...