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Removing viewcontrollers from navigation stack
...a navigation stack, with say 5 UIViewControllers. I want to remove the 3rd and 4th viewcontrollers in the stack on the click of a button in the 5th viewcontroller. Is it possible to do this? If so how?
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Rake just one migration
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rake db:migrate:redo VERSION=xxxxxxx, but that will run the down and then the up step. You could do this in conjunction with commenting out the down step temporarily.
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Creating instance of type without default constructor in C# using reflection
...ance without calling a constructor. I found this class by using Reflector and digging through some of the core .Net serialization classes.
I tested it using the sample code below and it looks like it works great:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Te...
Unbalanced calls to begin/end appearance transitions for
...the real view controller, but you must have the tab bar controller present and dismiss.
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Accessing an SQLite Database in Swift
...the SQLite library yourself, you would:
Configure your Swift project to handle SQLite C calls. If using Xcode 9 or later, you can simply do:
import SQLite3
Create/open database.
let fileURL = try! FileManager.default
.url(for: .applicationSupportDirectory, in: .userDomainMask, appropriateFo...
Managing CSS Explosion
...ng on. Right now, all the CSS styles are being applied on a per tag basis, and so now I am trying to move it to more of an external styling to help with any future changes.
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How to determine MIME type of file in android?
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First and foremost, you should consider calling MimeTypeMap#getMimeTypeFromExtension(), like this:
// url = file path or whatever suitable URL you want.
public static String getMimeType(String url) {
String type = null;
St...
Swift make method parameter mutable?
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inout keyword should be placed between parameter name and parameter type like this: func reduceToZero(x: inout Int) in current Swift 3 version.
– Agustí Sánchez
Sep 24 '16 at 8:59
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Performance surprise with “as” and nullable types
...'m just revising chapter 4 of C# in Depth which deals with nullable types, and I'm adding a section about using the "as" operator, which allows you to write:
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Merging objects (associative arrays)
What’s the best/standard way of merging two associative arrays in JavaScript? Does everyone just do it by rolling their own for loop?
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