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python: How do I know what type of exception occurred?
... catch generic exceptions, but no one seems to want to tell you why, which is essential to understanding when you can break the "rule". Here is an explanation. Basically, it's so that you don't hide:
the fact that an error occurred
the specifics of the error that occurred (error hiding antipatter...
Bash Script : what does #!/bin/bash mean? [duplicate]
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That is called a shebang, it tells the shell what program to interpret the script with, when executed.
In your example, the script is to be interpreted and run by the bash shell.
Some other example shebangs are:
(From Wikipedia...
What's the recommended way to extend AngularJS controllers?
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Perhaps you don't extend a controller but it is possible to extend a controller or make a single controller a mixin of multiple controllers.
module.controller('CtrlImplAdvanced', ['$scope', '$controller', function ($scope, $controller) {
// Initialize the super cla...
What is the difference between and ?
What is the difference between <html lang="en"> and <html lang="en-US"> ? What other values can follow the dash?
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How to check if AlarmManager already has an alarm set?
When my app starts, I want it to check if a particular alarm (registered via AlarmManager) is already set and running. Results from google seem to indicate that there is no way to do this. Is this still correct? I need to do this check in order to advise the user before any action is taken to create...
What new capabilities do user-defined literals add to C++?
...terals which will allow the introduction of new literal syntax based on existing literals ( int , hex , string , float ) so that any type will be able to have a literal presentation.
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jquery - return value using ajax result on success
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The trouble is that you can not return a value from an asynchronous call, like an AJAX request, and expect it to work.
The reason is that the code waiting for the response has already executed by the time the response is received.
The ...
JavaScript window resize event
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jQuery is just wrapping the standard resize DOM event, eg.
window.onresize = function(event) {
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};
jQuery may do some work to ensure that the resize event gets fired consistently in all browsers, but I'm not sure if any of...
What is “pom” packaging in maven?
...een googling quite a bit. It seems like the top level pom.xml files in this project have the packaging type set as pom .
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How to get ID of the last updated row in MySQL?
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I've found an answer to this problem :)
SET @update_id := 0;
UPDATE some_table SET column_name = 'value', id = (SELECT @update_id := id)
WHERE some_other_column = 'blah' LIMIT 1;
SELECT @update_id;
EDIT by aefxx
This technique can be further expa...