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How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
... PK name you must either use ForeignKeyAttribute data annotation or fluent API to map the relation
Data annotation:
// The name of related navigation property
[ForeignKey("Parent")]
public int ParentId { get; set; }
Fluent API:
modelBuilder.Entity<Child>()
.HasRequired(c =>...
Further understanding setRetainInstance(true)
...);
}
}
}
Source code for FragmentRetainInstance.java (as of API 16):
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a ...
Custom HTTP headers : naming conventions
...TTP headers of requests we send them, or even responses they get from our API.
What is the general convention to add custom HTTP headers, in terms of naming , format ... etc.
...
How to read all files in a folder from Java?
... = new File("/home/you/Desktop");
listFilesForFolder(folder);
Files.walk API is available from Java 8.
try (Stream<Path> paths = Files.walk(Paths.get("/home/you/Desktop"))) {
paths
.filter(Files::isRegularFile)
.forEach(System.out::println);
}
The example uses try-wit...
What is the benefit of using Fragments in Android, rather than Views?
...n developing for Android , you can set your target (or minimum) sdk to 4 (API 1.6) and add the android compatibility package (v4) to add support for Fragments . Yesterday I did this and successfully implemented Fragments to visualize data from a custom class.
...
How to join components of a path when you are constructing a URL in Python
...nd was looking for a simple way to join them:
>>> url = 'https://api.foo.com/orders/bartag?spamStatus=awaiting_spam&page=1&pageSize=250'
Doing some looking around:
>>> split = urlparse.urlsplit(url)
>>> split
SplitResult(scheme='https', netloc='api.foo.com', pa...
How to extract text from a PDF? [closed]
Can anyone recommend a library/API for extracting the text and images from a PDF?
We need to be able to get at text that is contained in pre-known regions of the document, so the API will need to give us positional information of each element on the page.
...
How do I check if an element is really visible with JavaScript? [duplicate]
...lement.
Check out the method Selenium.prototype.isVisible in the selenium-api.js file.
http://svn.openqa.org/svn/selenium-on-rails/selenium-on-rails/selenium-core/scripts/selenium-api.js
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i...
How do I programmatically shut down an instance of ExpressJS for testing?
...en call process.exit(0).
Links:
app.close: http://nodejs.org/docs/latest/api/http.html#server.close (same applies for)
process.exit:
http://nodejs.org/docs/latest/api/process.html#process.exit
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Calculating the difference between two Java date instances
...
The JDK Date API is horribly broken unfortunately. I recommend using Joda Time library.
Joda Time has a concept of time Interval:
Interval interval = new Interval(oldTime, new Instant());
EDIT: By the way, Joda has two concepts: Inte...