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Design by contract using assertions or exceptions? [closed]
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The point in assertions is not to correct errors, but to alert the programmer. Keeping them enabled in release builds is useless for that reason: What would you have gained by having an assert firing? The developer won't be able to jump in and debug it. Assertions are a debugging a...
What is the proper way to check for existence of variable in an EJS template (using ExpressJS)?
...t a bigger problem on my hands. This throws a Reference Error too: <% alert('test'); %>
– Aashay Desai
Mar 21 '11 at 0:34
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What is the difference between substr and substring?
...s parameters as (from, length).
Update: MDN considers substr legacy.
alert("abc".substr(1,2)); // returns "bc"
alert("abc".substring(1,2)); // returns "b"
You can remember substring takes indices, as does yet another string extraction method, slice.
When starting from 0 you can use either m...
Injecting $scope into an angular service function()
... patientCategoryController = function ($scope, getDataFactory) {
alert('Hare');
var promise = getDataFactory.callWebApi('someDataToPass');
promise.then(
function successCallback(response) {
alert(JSON.stringify(response.data));
//...
How to get screen width without (minus) scrollbar?
..., html').css('overflow', 'visible');
var screenWidth2 = $(window).width();
alert(screenWidth1); // Gives the screenwith without scrollbar
alert(screenWidth2); // Gives the screenwith including scrollbar
You can get the screen width by with and without scroll bar by using this code.
Here, I have ch...
How to communicate between iframe and the parent site?
...ame:
window.onmessage = function(e){
if (e.data == 'hello') {
alert('It works!');
}
};
If you are posting message from iframe to parent window
window.top.postMessage('hello', '*')
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How to debug JavaScript / jQuery event bindings with Firebug or similar tools?
...dow.console) in case it gets left in the code (much easier to do than with alert()) and breaks IE.
– thepeer
Jan 24 '12 at 16:46
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Does the APNS device token ever change, once created?
... be thought of as invariant.
[I'm not worried if I have to update my test scripts with new tokens every two years, especially since I change phones every year.]
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Is it correct to use JavaScript Array.sort() method for shuffling?
...rr.join("\n")+"\n\nTime taken: " + ((end - start)/1000) + " seconds.";
};
alert("random sort: " + test([1,2,3,4], 100000, randSort));
alert("shuffle: " + test([1,2,3,4], 100000, shuffle));
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What is the exact meaning of IFS=$'\n'?
... can be
found in the Bash documentation.found
I guess it's forcing the script to escape the line feed to the proper ANSI-C standard.
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