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Can I set an opacity only to the background image of a div?
...t;
Hi there
</div>
CSS
.myDiv {
position: relative;
z-index: 1;
}
.myDiv .bg {
position: absolute;
z-index: -1;
top: 0;
bottom: 0;
left: 0;
right: 0;
background: url(test.jpg) center center;
opacity: .4;
width: 100%;
height: 100%;
}
See...
Jinja2 template variable if None Object set a default value
...
This works for a simple variable, but not for this question where you're looking to grab a field out of a more complex one. I would downvote this, since it's not a good answer to the original question... and yet at the same time, knowing about default is exactly what I neede...
Manipulating an Access database from Java without ODBC
...s databases without using ODBC. It uses two other packages, Jackcess and HSQLDB, to perform these tasks. The following is a brief overview of how to get it set up.
Option 1: Using Maven
If your project uses Maven you can simply include UCanAccess via the following coordinates:
groupId: net.sf...
ViewBag, ViewData and TempData
...e View.
public class OneController: Controller
{
public ActionResult Index()
{
TempData["foo"] = "bar";
return RedirectToAction("index", "two");
}
}
public class TwoController: Controller
{
public ActionResult Index()
{
var model = new MyViewModel
...
通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...rver 1000;
server_name *.xip.io;
root /usr/local/www;
index index.html index.htm index.php;
location / {
try_files $uri $uri/ /index.php$is_args$args;
}
location ~ \.php$ {
set $cache_key $request_method://$host$request_uri;
set $c...
Why do we copy then move?
I saw code somewhere in which someone decided to copy an object and subsequently move it to a data member of a class. This left me in confusion in that I thought the whole point of moving was to avoid copying. Here is the example:
...
Javascript - sort array based on another array
...he sorting array:
result = items.map(function(item) {
var n = sorting.indexOf(item[1]);
sorting[n] = '';
return [n, item]
}).sort().map(function(j) { return j[1] })
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Strings as Primary Keys in SQL Database [closed]
... wouldn't it depend on the database? I would think a properly indexed string would not be that much slower if at all from a number?
– Ryan Guill
Feb 5 '09 at 20:09
2
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How do I delete rows in a data frame?
...ven by the '-' operator" -> This is a very misleading wording. Negative indexes are removed and that's it, there is no notion of complement. If you work with logical and try using - it won't work, because the complement operator for logicals is !. The complement of c(2,4,6) in the rows would rath...
How can one see the structure of a table in SQLite? [duplicate]
...sqlite3.
Example:
sqlite> entropy:~/Library/Mail>sqlite3 Envelope\ Index
SQLite version 3.6.12
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> .tables
addresses ews_folders subjects
alarms feeds thr...