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How do I check if a directory exists? “is_dir”, “file_exists” or both?
I want to create a directory if it does'nt exist already.
12 Answers
12
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Trying to mock datetime.date.today(), but not working
...are a few problems.
First of all, the way you're using mock.patch isn't quite right. When used as a decorator, it replaces the given function/class (in this case, datetime.date.today) with a Mock object only within the decorated function. So, only within your today() will datetime.date.today be a d...
Why do we need fibers
... never use directly in application-level code. They are a flow-control primitive which you can use to build other abstractions, which you then use in higher-level code.
Probably the #1 use of fibers in Ruby is to implement Enumerators, which are a core Ruby class in Ruby 1.9. These are incredibly u...
How to simulate a click with JavaScript?
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Here's what I cooked up. It's pretty simple, but it works:
function eventFire(el, etype){
if (el.fireEvent) {
el.fireEvent('on' + etype);
} else {
var evObj = document.createEvent('Events');
evObj.initEvent(etype, true, false);
e...
Why does my application spend 24% of its life doing a null check?
I've got a performance critical binary decision tree, and I'd like to focus this question on a single line of code. The code for the binary tree iterator is below with the results from running performance analysis against it.
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Should developers have administrator permissions on their PC
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The answer is 'Yes'. Developers will need to frig with system configurations to test items, install software (if nothing else, to test the installation process of whatever they happen to be developing), poke about the registry and run software that will not work properly with...
LINQ Select Distinct with Anonymous Types
So I have a collection of objects. The exact type isn't important. From it I want to extract all the unique pairs of a pair of particular properties, thusly:
...
Deleting multiple elements from a list
Is it possible to delete multiple elements from a list at the same time? If I want to delete elements at index 0 and 2, and try something like del somelist[0] , followed by del somelist[2] , the second statement will actually delete somelist[3] .
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How to trigger a click on a link using jQuery
...or, then the code you have will work I recreated your example in jsfiddle with an added eventHandler so you can see that it works:
$(document).on("click", "a", function(){
$(this).text("It works!");
});
$(document).ready(function(){
$("a").trigger("click");
});
Are you trying to cause th...
Dynamically creating keys in a JavaScript associative array
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Use the first example. If the key doesn't exist it will be added.
var a = new Array();
a['name'] = 'oscar';
alert(a['name']);
Will pop up a message box containing 'oscar'.
Try:
var text = 'name = oscar'
var dict = new Array()
var keyValuePair = text.replace(/ /g,'').s...