global

问题 I want to define a global list and append a list to it. I am getting a list (i[0]) by some on click event and appended that to mnum_list. Now i want create a global list and append that mnum_list to it. Any idea how to do this? def OnClick(self, event): name = event.GetEventObject().GetLabelText() cursor= self.conn.execute("SELECT * FROM ELEMENT where SYMBOL==?", (name,)) elements = cursor.fetchall() print elements cursor= self.conn.execute("SELECT ATOMIC_NUMBER FROM ELEMENT where SYMBOL = ?"

问题 I have one variable and two functions . The variable is used by both. and the first function is changing the variable value (globally) each time it's used by it . This is what I want but it is not working with me . x = 1; function f1() { x = x + 1; // use x } function f2() { // use x } I've read other threads but x is always 1 which is very frustrating :| added: actual code <script type="text/javascript"> function S4() { return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);

问题 I am seeing this warning in my JNI code: JNI WARNING: 0x44be7258 is not a valid JNI reference I am assigning a LocalReference returned by FindClass method in JNI to my class member variable within the constructor: Header: ... jclass m_class; Cpp: m_class = env->FindClass( classSignature ); Does FindClass return a LocalReference and storing it in my class member variable is invalid? 回答1: From the Liang book, chapter 5.1.1 "Local References" Most JNI functions create local references ... A

问题 In my react JS app, I make many API calls, Rather than having to specify: const BASE_URL = 'https://apiurlgoeshere.com/' on every page, I'd rather have BASE_URL accessible throughout the entire application, so I can just do BASE_URL + API_CALL for example 回答1: If this is just adding BASE_URL , then this can be achieved by declaring it inside a constants.js file and exporting it from there. But then, that makes us do BASE_URL + "something" each time we make a network request which isn't really

问题 I'm using unittest module. I need to separate setUp, setUpClass, teardown and teardownClass logs from unittests logs. Output should look something like: **************setting things up************** INFO: preparing database INFO: create new users **************end of setup**************** INFO: starting test one INFO: ... **************Cleaning things************** INFO: delete users ... I tried to override some functions in unittest.suite (_handleClassSetUp, _handleModuleFixtures,

问题 I couldn't come up with a better question title, sorry. My question is, in he.js as per https://github.com/mathiasbynens/he/blob/master/he.js , they are using the following code: /*! https://mths.be/he v0.5.0 by @mathias | MIT license */ ;(function(root) { //...omitted var he = { 'version': '0.5.0', 'encode': encode, 'decode': decode, 'escape': escape, 'unescape': decode }; // Some AMD build optimizers, like r.js, check for specific condition patterns // like the following: if ( typeof define

问题 I have a class, which has a method that uses this . I 'newed up' an instance of this object and passed on its method to a variable in the global context. If I then call my global function this is undefined. class Tests { logThis() { console.log(this); } } const globalFunc = new Test().logThis; globalFunc(); // undefined Now, if I had just used an object literal then this is is global. const someObject= { logThis2: function() {console.log(this)} } const globalFunc2 = someObject.logThis2;

问题 The python documentation states "execfile() cannot be used reliably to modify a function’s locals." on the page http://docs.python.org/2/library/functions.html#execfile Can anyone provide any further details on this statement? The documentation is fairly minimal. The statement seems very contradictory to "If both dictionaries are omitted, the expression is executed in the environment where execfile() is called." which is also in the documentation. Is there a special case when excecfile is

问题 I'm having some problems with a function recognizing that some variables have been previously defined; they are supposed to be global, but they don't seem to be acting like it. var global = "Summat."; function Function() { alert(global); //alerts "undefined" //some more code referencing similar variables alert("Hey."); //doesn't display. } I'm not sure that the problem is actually what-I-believe-to-be-global variables aren't behaving like global variables, but that's what I've narrowed it

问题 If I have a button: <button id="button1"> Normally I would write: $("#button1").click(function () { //do something } But I want to define a function that responds to all click events except when someone clicks on this button. Is there a selector that would allow me to target all other clickable elements in the document except button1 ? 回答1: I know you have accepted the answer above but I would advise strongly against this. You can use event delegation to do what you want with a lot less