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Bootstrap select dropdown list placeholder
...he/she is asking for a bootstrap built-in solution
– Mehdi
Apr 1 '16 at 2:08
5
Also You can use d...
SQL Server 2008 can't login with newly created user
...hat the problem is resolved. It also contributes to a growing body of documentation that other developers can use to find their own answers in the future.
– Joe Mayo
Nov 13 '09 at 22:50
...
Changing column names of a data frame
I have a data frame called "newprice" (see below) and I want to change the column names in my program in R.
16 Answers
...
Adjusting and image Size to fit a div (bootstrap)
...d1 img {
width:100%;
height: 230px;
}
jsFiddle
...per your comment, you could also just block any overflow - see this example to see an image restricted by height and cut off because it's too wide.
.top1 {
height:390px;
background-color:#FFFFFF;
margin-top:10px;
overflo...
What does jquery $ actually return?
I have read the JQuery documentation, and while much attention is devoted to what you should pass the function, I don't see any information on what it actually returns .
...
Apache POI Excel - how to configure columns to be expanded?
I am using Apache POI API to generate excel spreadsheet to output some data.
11 Answers
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What does map(&:name) mean in Ruby?
...
It's shorthand for tags.map(&:name.to_proc).join(' ')
If foo is an object with a to_proc method, then you can pass it to a method as &foo, which will call foo.to_proc and use that as the method's block.
The Symbol#to_proc method was originally added b...
How do I check if an HTML element is empty using jQuery?
I'm trying to call a function only if an HTML element is empty, using jQuery.
17 Answers
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Can't stop rails server
...n the PID column to kill the process:
For example:
$ kill -9 PID
And some of the other answers i found is:
To stop the rails server while it's running, press:
CTRL-C
CTRL-Z
You will get control back to bash. Then type (without the $):
$ fg
And this will go back into the process, and then ...
How to Add a Dotted Underline Beneath HTML Text
...o:
<html>
<head>
<!-- Other head stuff here, like title or meta -->
<style type="text/css">
u {
border-bottom: 1px dotted #000;
text-decoration: none;
}
</style>
</head>
<!-- Body, content here -->
</html>
...