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How do I compare strings in Java?
...tion where you know you're dealing with interned strings, you can use ==.
From JLS 3.10.5. String Literals:
Moreover, a string literal always refers to the same instance of class String. This is because string literals - or, more generally, strings that are the values of constant expressions (...
What is a plain English explanation of “Big O” notation?
...hat we could express the number of operations as: n2 + 2n. But as you saw from our example with two numbers of a million digits apiece, the second term (2n) becomes insignificant (accounting for 0.0002% of the total operations by that stage).
One can notice that we've assumed the worst case scenari...
what is the difference between sendStickyBroadcast and sendBroadcast in Android
...turn value of registerReceiver(BroadcastReceiver, IntentFilter).
:- apart from this same as sendBroadcast(Intent).
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wildcard ssl on sub-subdomain [closed]
...for *.example.net will match sub.example.net but not sub.sub.example.net.
From RFC 2818:
Matching is performed using the matching rules specified by
RFC2459. If more than one identity of a given type is present in
the certificate (e.g., more than one dNSName name, a match in any one
...
How to use GNU Make on Windows?
...
You pretty much should stay away from making msys or mingw a part of your environment variables for bloat reasons, but also because msys directory is local to itself. The path in msys will allow you to use make if its in mingw64's bin, however not speaking o...
C++ include and import difference
...sed with .NET / CLI stuff.
Import in gcc:
The import in gcc is different from the import in VC++. It is a simple way to include a header at most once only. (In VC++ and GCC you can do this via #pragma once as well)
The #import directive was officially undeprecated by the gcc team in version 3.4 ...
Difference between filter and filter_by in SQLAlchemy
... db.users.name=='Ryan' evaluate once to a constant and then be meaningless from then on? It seems like one would need to use a lambda for this to work.
– Hamish Grubijan
Feb 27 '13 at 23:11
...
Easy way to test a URL for 404 in PHP?
...ser has contributed the following:
/**
This is a modified version of code from "stuart at sixletterwords dot com", at 14-Sep-2005 04:52. This version tries to emulate get_headers() function at PHP4. I think it works fairly well, and is simple. It is not the best emulation available, but it works.
...
How to know if other threads have finished?
...t Exception when it completes, or
Use locks or synchronizers or mechanisms from java.util.concurrent, or
More orthodox, create a listener in your main Thread, and then program each of your Threads to tell the listener that they have completed.
How to implement Idea #5? Well, one way is to first c...
Do the parentheses after the type name make a difference with new?
...t can actually affect your code's behavior. Much of the following is taken from comments made to an "Old New Thing" article.
Sometimes the memory returned by the new operator will be initialized, and sometimes it won't depending on whether the type you're newing up is a POD (plain old data), or if ...