I have a co-worker that maintains that TRUE used to be defined as 0 and all other values were FALSE. I could swear that every language I've worked with, if you could even get a value for a boolean, that the value for FALSE is 0. Did TRUE used to be 0? If so, when did we switch? ...
Hello, I have the following piece of code in my program: $val = chr(someFunction()); if($val == " ") { #do something } elsif($val == 0) { #do something else } But whenever 0 is passed to $val, the if part executes instead of the elsif which I expect to get executed. How can I fix this? Thank You. ...
See also: Where in the documentation does it say that while tests readdir for definedness?. (Not a duplicate; just closely related.) Many people treat the loop below as idiomatic: while (defined(my $file = readdir($dir)) { ... } instead of: while (my $file = readdir($dir)) { ... } because supposedly with the latter vers...
As part of answering another question, I wrote the following code whose behaviour seems bizarre at first glance: print True # outputs true True = False; print True # outputs false True = True; print True # outputs false True = not True; print True # outputs true Can anyone explain this strange behaviour...
I am making a nested ul slide down when it's parent is clicked on for a clients navigation, so the parent link is deactivated with return false. But the return false is deactivating the child links too, how can I avoid this? $("li.page_item a:first-child").click(function() { //select it's direct sub ul var subnav = $(this).next...
Hello! Is it possibly to run a (silverlight app) tag in "param, windowless = false" ? Even if i set it to off, it automaticly sets to true when i run the website :/ . Why i would like to do this is that my website is encrypted with java script, just to make it a little bit harder to see the source for my xap files. But if someone tar...
I'm completely confused ... I'd swear this was working yesterday ... I woke up this morning and all my forms stopped to work in my project. All the forms have a "onsubmit" to a function that returns false since it's an ajax call, so the form is never sent. After a lot of tests, I simplified the question to this piece of code: <html> <...
What's the best practise when adapting C-style functions which return a true/false to Java? Here's a simple method to illustrate where the problem lies. public static boolean fileNameEndsWithExtension( String filename, String fileExtension) { return filename.endsWith( fileExtension ); } Note that there's probably a more elegant...
Is it guaranteed that False == 0 and True == 1, in Python? For instance, is it in any way guaranteed that the following code will always produce the same results, whatever the version of Python (existing and in the foreseeable future)? 0 == False # True 1 == True # True ['zero', 'one'][False] # is 'zero' Any reference to the offi...
Is it possible to set async:false to $.getJSON call.... Any suggestion.... ...
Initially i was looking for an answer to a show/hide page jumping issue. Having found an answer here: http://stackoverflow.com/questions/2024342/link-with-href-scrolls-page-to-top-when-used-with-jquery-slidetoggle, I need to understand where to put "return false" in the following code: toggleDetail : function(obj) { $(obj).parent()....
I am converting a javascript/php/ajax application to use jQuery to ensure compatibility with browsers other than Firefox. I am having trouble passing true, false, and null values using jQuery's ajax function. Javascript code: $.ajax ( { url : <server_url>, dataType: 'json', type : 'POST', success : re...
Hi there, the following code #include <iostream> using namespace std; int main(){ char greeting[50] = "goodmorning everyone"; char *s1 = greeting; char *s2 = &greeting[7]; bool test = s2-s1; cout << "s1 is: " << s1 << endl; cout << "s2 is: " << s2 << endl; if (test == true ){ cout << "test is true...
so.. is this possible? because I see some native php functions can do that for example strpos() can return 0 which can apparently be true ...
Hello, I'm writing a jQuery plugin that has a couple of callbacks, and am at the point where I need to allow one of the callbacks to run. The callback in question is 'beforeListItemSelect', so naturally I'd like the plugin code after the callback to not run if the callback function returns false. So the following is a section of my plug...
def next_prime_number (last_known_prime) while true last_known_prime++ found_factor = false # ERROR for i in 1...last_known_prime if last_known_prime % i == 0 found_factor = true break end end if !found_factor puts "new prime: #{last_known_prime}" Kernel.exit end end en...
Hey all, Is it good practice to use "return false;" to basically say do nothing in an if statement? For example: if (navigator.userAgent.match(/iPad/i) != null) { return false; } else { //Usual script here } just wondering if there are any downfalls to this. I can use the if statement without the else but i'm just wanting to ...
Hello! What kind of variables will NOT pass through this: if(myVar){//code} Boolean false? NULL? Boolean false and NULL? Anything else? Thank you. ...
Im using the Facebook SDK (http://facebooktoolkit.codeplex.com) to include Facebook-Connect into my Asp.net MVC Project. After someone logs into my Webapplication via Facebook Connect (I implemented that Facebook-Login-Button successfully) I want to fetch some data from the User. Therefore I created an ActionFilter that just checks if th...
Is it possible to: for k,v in kwargs.items() if v == None or v == '' or v == 1.0 or v == False: del kwargs[k] without deleting the key if v == 0.0? (False seems to equal 0.0), and without deleting the keys who equal True. ...