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What's the difference between passing by reference vs. passing by value?
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First and foremost, the "pass by value vs. pass by reference" distinction as defined in the CS theory is now obsolete because the technique originally defined as "pass by reference" has since fallen out of favor and is seldom used now.1
Newer languages2 tend to u...
Traits vs. interfaces
I've been trying to study up on PHP lately, and I find myself getting hung up on traits. I understand the concept of horizontal code reuse and not wanting to necessarily inherit from an abstract class. What I don't understand is: What is the crucial difference between using traits versus interfaces?...
How to sort strings in JavaScript
... localeCompare() method) on msdn.microsoft.com/en-us/library/ie/s4esdbwz(v=vs.94).aspx . One thing to note though, In the old implementations where we do not use the locales and options arguments (the one used before IE11) the locale and sort order used are entirely implementation dependent, in othe...
Making your .NET language step correctly in the debugger
...exactly diagnose the issue, however here are some notes that might help.
VS (2008+) can-to run as a non-admin
Do any symbols load at all the second time around? You might test by breaking in (through exception or call System.Diagnostic.Debugger.Break())
Assuming that symbols load, is there a repro...
How do I see a C/C++ source file after preprocessing in Visual Studio?
...n.microsoft.com/en-us/library/f35ctcxw.aspx
– G.Rassovsky
Mar 17 '15 at 9:11
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PostgreSQL: Difference between text and varchar (character varying)
...this article from Depesz: http://www.depesz.com/index.php/2010/03/02/charx-vs-varcharx-vs-varchar-vs-text/
A couple of highlights:
To sum it all up:
char(n) – takes too much space when dealing with values shorter than n (pads them to n), and can lead to subtle errors because of adding...
Configure Microsoft.AspNet.Identity to allow email address as username
...was easy to use. I enjoyed using the configuration website accessible from VS for it..
– The Muffin Man
Jan 19 '14 at 1:46
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Mixed mode assembly is built against version ‘v2.0.50727′ of the runtime
... needs to be in a file sgen.exe.config, next to sgen.exe. For example, for VS 2015, create C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6 Tools\sgen.exe.config. Minimum file contents: <configuration><startup useLegacyV2RuntimeActivationPolicy="true"/></configuratio...
When to use EntityManager.find() vs EntityManager.getReference() with JPA
I have come across a situation (which I think is weird but is possibly quite normal) where I use the EntityManager.getReference(LObj.getClass(), LObj.getId()) to get a database entity and then pass the returned object to be persisted in another table.
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Skip List vs. Binary Search Tree
I recently came across the data structure known as a skip list . It seems to have very similar behavior to a binary search tree.
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