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entity object cannot be referenced by multiple instances of IEntityChangeTracker. while adding relat
...ch has references with City. But everytime I try to save my contact, which is validated I get the exception "ADO.Net Entity Framework An entity object cannot be referenced by multiple instances of IEntityChangeTracker"
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Convert String to Float in Swift
...or some reason you can use Float(Wage.text) ?? 0 which will return 0 if it is not a valid Float.
Old Solution
The best way to handle this is direct casting:
var WageConversion = (Wage.text as NSString).floatValue
I actually created an extension to better use this too:
extension String {
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How can jQuery deferred be used?
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The best use case I can think of is in caching AJAX responses. Here's a modified example from Rebecca Murphey's intro post on the topic:
var cache = {};
function getData( val ){
// return either the cached value or jqXHR object wrapped Promise
re...
How to define a two-dimensional array?
...ant to define a two-dimensional array without an initialized length like this:
27 Answers
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Difference between -pthread and -lpthread while compiling
What is the difference between gcc -pthread and gcc -lpthread which is used while compiling multithreaded programs?
3 A...
Is AngularJS just for single-page applications (SPAs)?
...t all. You can use Angular to build a variety of apps. Client-side routing is just a small piece of that.
You have a large list of features that will benefit you outside of client-side routing:
two-way binding
templating
currency formatting
pluralization
reusable controls
RESTful api handling
AJA...
How does autowiring work in Spring?
... Web applications have a Servlet, JSF uses a el-resolver, etc. Also, there is a place where the application context is bootstrapped and all beans - autowired. In web applications this can be a startup listener.
Autowiring happens by placing an instance of one bean into the desired field in an insta...
Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the La
The error in the title is thrown only in Google Chrome, according to my tests. I'm base64 encoding a big XML file so that it can be downloaded:
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Static Initialization Blocks
As far as I understood the "static initialization block" is used to set values of static field if it cannot be done in one line.
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Remove multiple whitespaces
... means replace two or more whitespace with a single space.
What you want is replace one or more whitespace with single whitespace, so you can use the pattern \s\s* or \s+ (recommended)
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