本文整理匯總了TypeScript中@hpcc-js/util.exists函數的典型用法代碼示例。如果您正苦於以下問題：TypeScript exists函數的具體用法？TypeScript exists怎麽用？TypeScript exists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exists函數的5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: it
it("deepMixin", function () {
expect(exists("a", { a: "a" })).to.be.true;
expect(exists("b", { a: "a" })).to.be.false;
expect(exists("a.b", { a: { b: "b" } })).to.be.true;
expect(exists("a.b.c.d", { a: { b: { c: { d: "d" } } } })).to.be.true;
expect(exists("a.b.c.e", { a: { b: { c: { d: "d" } } } })).to.be.false;
expect(exists("e.b.c.d", { a: { b: { c: { d: "d" } } } })).to.be.false;
expect(exists("", { a: { b: { c: { d: "d" } } } })).to.be.false;
expect(exists("a", undefined)).to.be.false;
expect(exists(undefined as any, {})).to.be.false;
expect(exists("a", "a")).to.be.false;
expect(() => exists("a", null)).to.throw(Error);
});示例2: parseXSD
return this.WUResult(from, count, !includeSchema, filter).then((response) => {
const result = response.Result;
delete response.Result; // Do not want it in "set"
this.set({
...response
} as any);
if (exists("XmlSchema.xml", result)) {
this.xsdSchema = parseXSD(result.XmlSchema.xml);
}
if (exists("Row", result)) {
return result.Row;
} else if (this.ResultName && exists(this.ResultName, result)) {
return result[this.ResultName].Row;
}
return [];
});示例3:
return this.connection.TpServiceQuery({}).then(response => {
const rootProtocol = this.connection.protocol();
const ip = this.connection.ip();
let port = rootProtocol === "https:" ? "18002" : "8002";
if (exists("ServiceList.TpEspServers.TpEspServer", response)) {
for (const item of response.ServiceList.TpEspServers.TpEspServer) {
if (exists("TpBindings.TpBinding", item)) {
for (const binding of item.TpBindings.TpBinding) {
if (binding.Service === type && binding.Protocol + ":" === rootProtocol) {
port = binding.Port;
}
}
}
}
}
return `${rootProtocol}//${ip}:${port}/`;
});示例4: exists
}).then(response => {
return exists("TargetClusterUsages.TargetClusterUsage", response) ? response.TargetClusterUsages.TargetClusterUsage : [];
});示例5: expect
expect(() => exists("a", null)).to.throw(Error);