大约有 45,000 项符合查询结果（耗时：0.0498秒） [XML]
How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'
I have a innoDB table which records online users. It gets updated on every page refresh by a user to keep track of which pages they are on and their last access date to the site. I then have a cron that runs every 15 minutes to DELETE old records.
...
Are HTTPS headers encrypted?
...follow
|
edited Nov 19 '16 at 0:25
JMD
7,08333 gold badges2525 silver badges3737 bronze badges
...
How can I change the default width of a Twitter Bootstrap modal box?
...swer (Bootstrap < 3)
Is there a certain reason you're trying to change it with JS/jQuery?
You can easily do it with just CSS, which means you don't have to do your styling in the document.
In your own custom CSS file, you add:
body .modal {
/* new custom width */
width: 560px;
/* ...
Difference between app.all('*') and app.use('/')
...are would be applied:
app.all() attaches to the application's router, so it's used whenever the app.router middleware is reached (which handles all the method routes... GET, POST, etc).
NOTICE: app.router has been deprecated in express 4.x
app.use() attaches to the application's main middl...
Why does Python pep-8 strongly recommend spaces over tabs for indentation?
...
The answer was given right there in the PEP [ed: this passage has been edited out in 2013]. I quote:
The most popular way of indenting Python is with spaces only.
What other underlying reason do you need?
To put it less bluntly: Consider also the scope of the PEP as stated in the very first...
ViewBag, ViewData and TempData
...a
Allows you to store data that will survive for a redirect. Internally it uses the Session as backing store, after the redirect is made the data is automatically evicted. The pattern is the following:
public ActionResult Foo()
{
// store something into the tempdata that will be available du...
How do I keep two side-by-side divs the same height?
...
Flexbox
With flexbox it's a single declaration:
.row {
display: flex; /* equal height of the children */
}
.col {
flex: 1; /* additionally, equal width */
padding: 1em;
border: solid;
}
<div class="row">
<d...
Re-raise exception with a different type and message, preserving existing information
I'm writing a module and want to have a unified exception hierarchy for the exceptions that it can raise (e.g. inheriting from a FooError abstract class for all the foo module's specific exceptions). This allows users of the module to catch those particular exceptions and handle them distinctly,...
LinkedBlockingQueue vs ConcurrentLinkedQueue
My question relates to this question asked earlier. In situations where I am using a queue for communication between producer and consumer threads would people generally recommend using LinkedBlockingQueue or ConcurrentLinkedQueue ?
...
Is there a NumPy function to return the first index of something in an array?
...
Yes, here is the answer given a NumPy array, array, and a value, item, to search for:
itemindex = numpy.where(array==item)
The result is a tuple with first all the row indices, then all the column indices.
For example, if an array is two dimensions and it contained your item at two loc...