See the reference for user-defined type guard functions for more information. function isString(test: any): test is string{ return typeof test === "string"; } function example(foo: any){ if(isString(foo)){ console.log("it is a string" + foo); console.log(foo.length); // string function } } example("hello world"); Using the type predicate test is string in the above format (instead of just using bo
I'm looking for a way to detect if a click event happened outside of a component, as described in this article. jQuery closest() is used to see if the target from a click event has the dom element as one of its parents. If there is a match the click event belongs to one of the children and is thus not considered to be outside of the component. So in my component, I want to attach a click handler t
When running pod repo update the following error is generated: Updating spec repo `master` [!] Failed to connect to GitHub to update the CocoaPods/Specs specs repo - Please check if you are offline, or that GitHub is down Using cocoapods 1.0.1 I'm also aware of this: Master spec-repo rate limiting post‑mortem. Adding --verbose flag to the call shows the ruby call stack: .rvm/gems/ruby-2.3.0/gems/c
Let’s say I have an options variable and I want to set some default value. What’s is the benefit / drawback of these two alternatives? Using object spread options = {...optionsDefault, ...options}; Or using Object.assign options = Object.assign({}, optionsDefault, options); This is the commit that made me wonder.
I have an app here where I need to put the logo in the navbar. That need to overflow the scene layout. Work well in Ios with no problem but in android seem like he not working. I put the code at the bottom of the images. As you can see I use EStyleSheet so that let me use %. IOS Android import React from 'react'; import { Scene, Router } from 'react-native-router-flux'; import EStyleSheet from 're
I am getting the following warning "Warning: setState(...): Can only update a mounted or mounting component. This usually means you called setState() on an unmounted component. This is a no-op. Please check the code for the ContactPage component." When I initially go to the contact page the firs time it is fine. Then if I navigate off the page and go back the warning is thrown. Contact page compon
I have an application which works fine on Xcode6-Beta1 and Xcode6-Beta2 with both iOS7 and iOS8. But with Xcode6-Beta3, Beta4, Beta5 I'm facing network issues with iOS8 but everything works fine on iOS7. I get the error "The network connection was lost.". The error is as follows: Error: Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo=0x7ba8e5b0 {NSErrorFailingU
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