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Prevent segue in prepareForSegue method?
...nd later:
You have to implement the method
- (BOOL)shouldPerformSegueWithIdentifier:(NSString *)identifier sender:(id)sender
In your view controller. You do your validation there, and if it's OK then return YES; if it's not then return NO; and the prepareForSegue is not called.
Note that this ...
How to add multiple objects to ManyToMany relationship at once in Django ?
... SQL I see only a single insert statement: INSERT INTO app_one_twos (one_id, two_id) VALUES (1, 1), (1, 2), (1, 3), (1, 4); This is in Django 1.4.
– Klaas van Schelven
Mar 26 '13 at 16:54
...
Why use symbols as hash keys in Ruby?
...source code, is always stored as the same entity, e.g. has the same object id.
Strings on the other hand are mutable, they can be changed anytime. This implies that Ruby needs to store each string you mention throughout your source code in it's separate entity, e.g. if you have a string "name" mul...
Compare if two variables reference the same object in python
...
While the two correct solutions x is z and id(x) == id(z) have already been posted, I want to point out an implementation detail of python. Python stores integers as objects, as an optimization it generates a bunch of small integers at its start (-5 to 256) and points...
Spring Data JPA find by embedded object property
...
This method name should do the trick:
Page<QueuedBook> findByBookIdRegion(Region region, Pageable pageable);
More info on that in the section about query derivation of the reference docs.
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How can I have lowercase routes in ASP.NET MVC?
...rd by setting LowercaseUrls property of RouteCollection:
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.LowercaseUrls = true;
routes.MapRoute(
name: "Default",
url: "{control...
How do I clear a search box with an 'x' in bootstrap 3?
...ry use the following HTML code:
<div class="btn-group">
<input id="searchinput" type="search" class="form-control">
<span id="searchclear" class="glyphicon glyphicon-remove-circle"></span>
</div>
and some CSS:
#searchinput {
width: 200px;
}
#searchclear {
...
how to get an uri of an image resource in android
...
The format is:
"android.resource://[package]/[res id]"
[package] is your package name
[res id] is value of the resource ID, e.g. R.drawable.sample_1
to stitch it together, use
Uri path = Uri.parse("android.resource://your.package.name/" + R....
How do I force Postgres to use a particular index?
...on "index hinting" feature found in many databases, PostgreSQL doesn't provide such a feature. This was a conscious decision made by the PostgreSQL team. A good overview of why and what you can do instead can be found here. The reasons are basically that it's a performance hack that tends to cause m...
Animated GIF in IE stopping
...
The accepted solution did not work for me.
After some more research I came across this workaround, and it actually does work.
Here is the gist of it:
function showProgress() {
var pb = document.getElementById("progressBar");
pb.innerHTML...