本文整理匯總了TypeScript中tns-core-modules/utils/types.isUndefined函數的典型用法代碼示例。如果您正苦於以下問題：TypeScript isUndefined函數的具體用法？TypeScript isUndefined怎麽用？TypeScript isUndefined使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。
在下文中一共展示了isUndefined函數的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: assertNotEqual
export function assertNotEqual(actual: any, expected: any, message?: string) {
let equals = false;
if (types.isUndefined(actual) && types.isUndefined(expected)) {
equals = true;
} else if (!types.isNullOrUndefined(actual) && !types.isNullOrUndefined(expected)) {
if (types.isFunction(actual.equals)) {
// Use the equals method
if (actual.equals(expected)) {
equals = true;
}
} else {
equals = actual === expected;
}
}
if (equals) {
throw new Error(message + " Actual: " + actual + " Not_Expected: " + expected);
}
}示例2: function
export var test_VirtualArray_shouldNotRaiseItemsLoadingIfIndexIsLoadedAndGetItemIsCalled = function () {
var array = new virtualArrayModule.VirtualArray<number>(100);
array.setItem(0, 0);
array.loadSize = 15;
var result: virtualArrayModule.ItemsLoading;
array.on(virtualArrayModule.VirtualArray.itemsLoadingEvent, (args: virtualArrayModule.ItemsLoading) => {
result = args;
});
array.getItem(0);
TKUnit.assert(types.isUndefined(result), "VirtualArray<T> getItem() should not raise 'itemsLoading' event if item is loaded!");
};