Iterators and Generators in AppStudio

By Stephen Quan in AppStudio 31 Jul 2019

I posted “Hello World” in BASIC (Iterators and Generators in AppStudio) on GeoNet AppStudio Blog Posts.

Mount CIFS on Ubuntu 18.04

By Stephen Quan in Unix 18 Jul 2019

I posted on https://askubuntu.com/a/1159138/327700 instructions for mounting Windows shares on Ubuntu 18.04:

# /etc/fstab
\\contoso\share /mnt/share cifs vers=1.0,credentials=/root/.smb

# /root/.smb
username=billgates
password=secret
domain=microsoft

‘for of’ loops and destructuring in AppStudio

By Stephen Quan in AppStudio 17 Jul 2019

I posted “for of” loops and destructuring in AppStudio on GeoNet AppStudio Blog Posts.

Killing a JavaScript function which runs infinite

By Stephen Quan in JavaScript 01 Jul 2019

I posted on https://stackoverflow.com/a/56829821/881441 a code snippet for breaking ‘infinite’ running Javascript functions:

function execWithTimeout(gen, timeout = 100) {
    const limit = Date.now() + timeout
    for (let output of gen()) {
        console.log(output)
        if (Date.now() > limit) throw(new Error("Timeout reached"))
    }
}

function *runInfinite() {
    let i = 0
    while (1) {
        yield i++
    }
}

execWithTimeout(runInfinite)

InputValidators in AppStudio

By Stephen Quan in AppStudio 27 Jun 2019

I posted AppStudio_InputValidator.qml on GitHub Gist which demonstrates an InputValidator on a TextField.

Cloud backup with tar/split

By Stephen Quan in Unix 21 Jun 2019

I updated tar and split with examples that help upload large content to your enterprise cloud base document management systems (e.g. Box, OneDrive and Google Drive).

Sorting QML ListModels

By Stephen Quan in AppStudio 19 Jun 2019

I posted Sorting QML ListModels on GeoNet AppStudio Blog Posts.

    function listModelSort(listModel, compareFunction) {
        let indexes = [ ...Array(listModel.count).keys() ]
        indexes.sort( (a, b) => compareFunction( listModel.get(a), listModel.get(b) ) )
        let sorted = 0
        while ( sorted < indexes.length && sorted === indexes[sorted] ) sorted++
        if ( sorted === indexes.length ) return
        for ( let i = sorted; i < indexes.length; i++ ) {
            listModel.move( indexes[i], listModel.count - 1, 1 )
            listModel.insert( indexes[i], { } )
        }
        listModel.remove( sorted, indexes.length - sorted )
    }

Promises in AppStudio

By Stephen Quan in AppStudio 05 Jun 2019

I posted Promises in AppStudio on GeoNet AppStudio Blog Posts.