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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?...
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...
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 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...
TCP 的那些事儿（下） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...sender这边收到了3个Duplicated Acks，进入Fast Retransimit模式，开发重传重复Acks指示的那个包。如果只有这一个包丢了，那么，重传这个包后回来的Ack会把整个已经被sender传输出去的数据ack回来。如果没有的话，说明有多个包丢了。我...
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
8
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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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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...
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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