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Jens Andersson jenshandersson

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@knowbody
knowbody / ex-navigation.md
Last active July 17, 2023 10:14
My exponent's ex-navigation docs/thoughts

Exponent - ex-navigation

This is for now, for my personal use only, things might not be correctly explained here. For the official docs please check: https://github.com/exponentjs/ex-navigation/blob/master/README.md

Navigation bar configuration

On every screen you can use the built-in navigation bar, you can add a title, left button, right button or change navigation bar’s style. All you need to do is pass appropriate params to navigationBar in the route configuration:

import React, { Component } from 'react';
@jenshandersson
jenshandersson / JAConcat.m
Created January 5, 2014 20:24
String concatenation in Objective-C, using one line of code. Takes a list of NSObject and concatenates their description.
#define $(...) ((NSString *)[[NSArray arrayWithObjects:__VA_ARGS__, nil] componentsJoinedByString:@""])
/*
* Example
*/
NSString *string = $(@"Hello", @" ", @"World!", @"\n", @"1 + 2 = ", @(1+2));
@alex-cellcity
alex-cellcity / Version.m
Created May 30, 2011 04:55
Runtime iOS Version Checking
/*
* System Versioning Preprocessor Macros
*/
#define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)