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Validate that a string is a positive integer

...ue); }, false ); test("1", true); test("1.23", false); test("1234567890123", true); test("1234567890123.1", false); test("0123", false); // false because we don't handle leading 0s test(" 123 ", false); // false because we don't handle whitespace <label> String: <inp...
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How to POST raw whole JSON in the body of a Retrofit request?

...nvertion in the rest of your application code: interface ServiceApi { fun login(username: String, password: String) = jsonLogin(createJsonRequestBody( "username" to username, "password" to password)) @POST("/api/login") fun jsonLogin(@Body params: RequestBod...
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What is a 'semantic predicate' in ANTLR?

...) throws Exception { ANTLRStringStream in = new ANTLRStringStream("123, 456, 7 , 89"); NumbersLexer lexer = new NumbersLexer(in); CommonTokenStream tokens = new CommonTokenStream(lexer); NumbersParser parser = new NumbersParser(tokens); parser.parse(); }...
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Items in JSON object are out of order using “json.dumps”?

...this we get: >>> import OrderedDict >>> unordered={"id":123,"name":"a_name","timezone":"tz"} >>> ordered = OrderedDict.OrderedDict( [("id",123), ("name","a_name"), ("timezone","tz")] ) >>> e = OrderedJsonEncoder() >>> print e.encode( unordered ) {"timezo...
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How can I call controller/view helper methods from the console in Ruby on Rails?

...the helper object: $ ./script/console >> helper.number_to_currency('123.45') => "R$ 123,45" If you want to use a helper that's not included by default (say, because you removed helper :all from ApplicationController), just include the helper. >> include BogusHelper >> helper...
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How to convert JSON data into a Python object

...ace data = '{"name": "John Smith", "hometown": {"name": "New York", "id": 123}}' # Parse JSON into an object with attributes corresponding to dict keys. x = json.loads(data, object_hook=lambda d: SimpleNamespace(**d)) print(x.name, x.hometown.name, x.hometown.id) OLD ANSWER (Python2) In Python2, ...
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Bootstrap Datepicker - Months and Years Only

...Date=&startView=2&minViewMode=2&todayBtn=false&language=zh-CN&orientation=auto&autoclose=on&forceParse=on#sandbox share | improve this answer | fo...
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warning: implicit declaration of function

... You are using a function for which the compiler has not seen a declaration ("prototype") yet. For example: int main() { fun(2, "21"); /* The compiler has not seen the declaration. */ return 0; } int fun(int x, char *p) { ...
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Where is Maven' settings.xml located on mac os?

.../JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/jre Default locale: zh_CN, platform encoding: UTF-8 OS name: "mac os x", version: "10.11.5", arch: "x86_64", family: "mac" share | improve this a...
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what is faster: in_array or isset? [closed]

...e, you can check out the compiled version of your script: echo isset($arr[123]) compiled vars: !0 = $arr line # * op fetch ext return operands ----------------------------------------------------------------------------- 1 0 > ZEND_ISSET_ISEMPTY_...