luangs7

/*
 * Copyright (C) 2017 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 copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

luangs7

inline infix fun EditText.guard(rule:Boolean,call: () -> Unit): String? {
    if (this.text.isNotEmpty() && rule) return text
    else {
        call()
        return null
    }
}

fun String.isEmail(): Boolean {
    val p = "^(\\w)+(\\.\\w+)*@(\\w)+((\\.\\w+)+)\$".toRegex()

luangs7

inline infix fun EditText.guard(call: () -> Unit): String? {
    if (this.text.isNotEmpty()) return text
    else {
        call()
        return null
    }
}


//example of usage