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Lists: Count vs Count() [duplicate]
... Internally though, LINQ checks if your IEnumerable implements ICollection and if it does it uses the Count property. So at the end of the day, there's no difference which one you use for a List.
To prove my point further, here's the code from Reflector for Enumerable.Count()
public static int Cou...
What should every JavaScript programmer know? [closed]
...ul, but they are often hiding the sometimes-ugly details of how JavaScript and the DOM actually work from you. If your aim is to be able to say “I know JavaScript”, then investing a lot of time in a framework is opposed to that.
Here are some JavaScript language features that you should know to...
How does a ArrayList's contains() method evaluate objects?
Say I create one object and add it to my ArrayList . If I then create another object with exactly the same constructor input, will the contains() method evaluate the two objects to be the same? Assume the constructor doesn't do anything funny with the input, and the variables stored in both objec...
jQuery object equality
...ery objects can be considered equal is whether they have the same selector and context. This is easy enough to test: A.selector === B.selector && A.context === B.context. Often the context will always be the same, so we only have to consider the selector.
– Casebash
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Find the PID of a process that uses a port on Windows
...
Just open a command shell and type (saying your port is 123456):
netstat -a -n -o | find "123456"
You will see everything you need.
The headers are:
Proto Local Address Foreign Address State PID
TCP 0.0.0...
Programmatically get own phone number in iOS
Is there any way to get own phone number by standard APIs from iPhone SDK?
9 Answers
9...
How big can a MySQL database get before performance starts to degrade
...you are going to run in to is not size, but the number of queries you can handle at a time. Most likely you are going to have to move to a master/slave configuration so that the read queries can run against the slaves and the write queries run against the master. However if you are not ready for t...
What is the fastest way to get the value of π?
... fastest π I know of is the one with the digits hard coded. Looking at Pi and Pi[PDF], there are a lot of formulae.
Here is a method that converges quickly — about 14 digits per iteration. PiFast, the current fastest application, uses this formula with the FFT. I'll just write the formula, since...
How to map with index in Ruby?
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IMO this is simpler and better-reading in 1.8.7+: arr.map.with_index{ |o,i| [o,i+2] }
– Phrogz
Jan 15 '11 at 2:43
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Create the perfect JPA entity [closed]
I've been working with JPA (implementation Hibernate) for some time now and each time I need to create entities I find myself struggling with issues as AccessType, immutable properties, equals/hashCode, ... .
So I decided to try and find out the general best practice for each issue and write this ...