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Return a “NULL” object if search result not found
...ava, if I had class with a 'search' method that would return an object T from a Collection< T > that matched a specific parameter, I would return that object and if the object was not found in the collection, I would return null . Then in my calling function I would just check if(tResult...
How do I measure the execution time of JavaScript code with callbacks?
... @gogaman this is a good point, since you can't capture the output from console.timeEnd(). Perhaps it might be useful to pipe the output to a file and utilize from there?
– Doug Molineux
Sep 25 '14 at 21:16
...
How to use gitignore command in git
... in folder your_project and a doc directory: your_project/doc.
Remove it from the project directory (without actually deleting it):
git rm --cached doc/*
If you don't already have a .gitignore, you can make one right inside of your project folder: project/.gitignore.
Put doc/* in the .gitignore ...
Check if a given key already exists in a dictionary and increment it
...are looking for collections.defaultdict (available for Python 2.5+). This
from collections import defaultdict
my_dict = defaultdict(int)
my_dict[key] += 1
will do what you want.
For regular Python dicts, if there is no value for a given key, you will not get None when accessing the dict -- a Ke...
How can I tell when HttpClient has timed out?
...ient()
{
BaseAddress = new Uri(baseAddress),
Timeout = TimeSpan.FromMilliseconds(1)
};
try
{
var s = await client.GetAsync();
}
catch(Exception e)
{
Console.WriteLine(e.Message);
Console.WriteLine(e.InnerException.Message);
}
...
How to use Session attributes in Spring-mvc
...().setAttribute("cart",value);
return "testJsp";
}
and you can get it from controller like this :
ShoppingCart cart = (ShoppingCart)session.getAttribute("cart");
Make your controller session scoped
@Controller
@Scope("session")
Scope the Objects ,for example you have user object that should...
How do I create a multiline Python string with inline variables?
...sked (in terms of syntax) are template strings. For example:
>>> from string import Template
>>> t = Template("This is an $example with $vars")
>>> t.substitute({ 'example': "example", 'vars': "variables"})
'This is an example with variables'
I should add though that th...
How do I parse JSON with Objective-C?
... runtime.
So, for example:
NSData *returnedData = ...JSON data, probably from a web request...
// probably check here that returnedData isn't nil; attempting
// NSJSONSerialization with nil data raises an exception, and who
// knows how your third-party library intends to react?
if(NSClassFromSt...
How do I detect IE 8 with jQuery?
...
I think the best way would be this:
From HTML5 boilerplate:
<!--[if lt IE 7]> <html lang="en-us" class="no-js ie6 oldie"> <![endif]-->
<!--[if IE 7]> <html lang="en-us" class="no-js ie7 oldie"> <![endif]-->
<!--[if IE ...
Why it's not possible to use regex to parse HTML/XML: a formal explanation in layman's terms
...ta structure underlying a regular
expression) does not have memory apart from the state it's in, and if
you have arbitrarily deep nesting, you need an arbitrarily large
automaton, which collides with the notion of a finite automaton.
The definition of regular expressions is equivalent to the...