大约有 31,840 项符合查询结果（耗时：0.0282秒） [XML]
What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
...
A very nice, clear description (I up-voted); but one nitpick, however: nokogiri ~> 1.4.4 wouldn't allow 1.5.3 to be installed; max allowed would be 1.4.x where x>=4 (for nokogiri that would be 1.4.7). The ~> operator means just the last digit in the used gem can ...
What is the difference between an annotated and unannotated tag?
...
TL;DR
The difference between the commands is that one provides you with a tag message while the other doesn't. An annotated tag has a message that can be displayed with git-show(1), while a tag without annotations is just a named pointer to a commit.
More About Lightweight ...
How do I expire a PHP session after 30 minutes?
...
You should implement a session timeout of your own. Both options mentioned by others (session.gc_maxlifetime and session.cookie_lifetime) are not reliable. I'll explain the reasons for that.
First:
session.gc_maxlifetime
session.gc_maxlifetime specifies the number of seconds after which ...
Unit Test? Integration Test? Regression Test? Acceptance Test?
Is there anyone that can clearly define these levels of testing as I find it difficult to differentiate when doing TDD or unit testing. Please if anyone can elaborate how, when to implement these?
...
Why is not in HTML 5 Tag list while is?
...
On the one hand, I agree with this answer. We need both <big> and <small>! On the other hand, isn't it just that we remember <big> and that's the reason we want to keep it? What about other "complementary" pairs? &...
Assign width to half available screen width declaratively
.../>
</LinearLayout>
I'm assuming you want your widget to take up one half, and another widget to take up the other half. The trick is using a LinearLayout, setting layout_width="fill_parent" on both widgets, and setting layout_weight to the same value on both widgets as well. If there ar...
Oracle PL/SQL - How to create a simple array variable?
...how this and it was the most important part to being able to add more than one item (from my understanding of it, still new to arrays in SQL).
– Jonathan Van Dam
Jul 7 '17 at 21:17
...
string sanitizer for filename
...on that will sanitize a string and make it ready to use for a filename. Anyone know of a handy one?
17 Answers
...
textarea's rows, and cols attribute in CSS
... just wanted to post a demo using calc() for setting rows/height, since no one did.
body {
/* page default */
font-size: 15px;
line-height: 1.5;
}
textarea {
/* demo related */
width: 300px;
margin-bottom: 1em;
display: block;
/* rows related */
font-size: inh...
Use CSS3 transitions with gradient backgrounds
...
One work-around is to transition the background position to give the effect that the gradient is changing:
http://sapphion.com/2011/10/css3-gradient-transition-with-background-position/
CSS3 gradient transition with backg...