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How to get the nth element of a python list or a default if not available
...It invloves creating 3 temporary lists and accessing 2 indices in order to select an item, though.
– Joachim Jablon
Apr 3 '14 at 9:48
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How to check if the user can go back in browser history or not
... if the 'beforeunload' fired.
var $window = $(window),
$trigger = $('.select_your_link'),
fallback = 'your_fallback_url';
hasHistory = false;
$window.on('beforeunload', function(){
hasHistory = true;
});
$trigger.on('click', function(){
window.history.go(-1);
setTimeout(...
How to create a directory in Java?
...
Much better answer than the one selected as the correct one by the OP. Checking for existence of the directory before creating it should become a well-known anti-pattern.
– mwhs
Nov 24 '13 at 11:30
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jQuery/JavaScript: accessing contents of an iframe
...e IFrame the same way you'd get any other id-less content with jQuery: you select the appropriate <IFrame> tag with CSS, using class names and attribute values to narrow it down if necessary.
– Auspex
Apr 20 '12 at 19:36
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How can I make an svg scale with its parent container?
... I recommend reading it while casually drinking a coffee or your choice of select liquids.
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IndentationError: unindent does not match any outer indentation level
...DLE editor you can do as it suggests in one of similar error messages:
1) select all, e.g. Ctrl + A
2) Go to Format -> Untabify Region
3) Double check your indenting is still correct, save and rerun your program.
I'm using Python 2.5.4
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Adding a collaborator to my free GitHub account?
...ge.
Start typing the new collaborator's GitHub username into the text box.
Select the GitHub user from the list that appears below the text box.
Click the "Add" button.
The added user should now be able to push to your repository on GitHub.
...
Copy and paste content from one file to another file in vi
... have two putty windows open, I am doing "v for visual mode first and then select all the lines and the do a "y" for yanking, not I am doing an alt+tab to get onto the other file and when I do a "p" for put, it only prints a quotation mark.
– macha
Jan 6 '11 at...
How to implement a rule engine?
..."Contains", "C#" )
};
// compile the rules once
var compiledRules = rules.Select(r => CompileRule(r)).ToList();
public bool MatchesAllRules(User user)
{
return compiledRules.All(rule => rule(user));
}
Here is the implementation of BuildExpr:
Expression BuildExpr(Rule r, ParameterExpress...
Can I implement an autonomous `self` member type in C++?
...e argument list is augmented by a contrived object and overload resolution selects one of the non-static member functions of T, the call is ill-formed.
Inside a static member function, this may not appear, but it still exists.
However, per the comments, inside a static member function, the transf...