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Best way to require all files from a directory in ruby?
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There's a subtle gotcha to not stripping the extension. If some other part of the code calls require 'foo' then ruby will load the same file again, which can lead to spurious errors. I added my own answer which explains that and shows how to strip the extension.
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C++ Singleton design pattern
...pattern for C++. It has looked like this (I have adopted it from the real life example):
22 Answers
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Are static fields open for garbage collection?
...ading of Classes and Interfaces
A class or interface may be unloaded
if and only if its defining class
loader may be reclaimed by the garbage
collector [...] Classes and interfaces
loaded by the bootstrap loader may not
be unloaded.
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How to select first and last TD in a row?
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and what if you want to select the second og third child?
– clarkk
Aug 29 '11 at 10:22
2
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Regex empty string or email
...can't handle it anyway. Try to find a library routine for matching them. If you only want to solve the practical problem of matching an email address (that is, if you want wrong code that happens to (usually) work), use the regular-expressions.info link someone else submitted.
As for the empty st...
Java switch statement: Constant expression required, but it IS constant
...he sense required by the JLS; see §15.28 Constant Expressions for the specification of a constant expression1. This refers to §4.12.4 Final Variables which defines a "constant variable" as follows:
We call a variable, of primitive type or type String, that is final and initialized with a comp...
What is q=0.5 in Accept* HTTP headers?
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This is called a relative quality factor. It specifies what language the user would prefer, on a scale of 0 to 1, as can be seen from the HTTP/1.1 Specification, §14.4:
Each language-range MAY be given an associated quality value which represents an estimate of the user's...
What is a “cache-friendly” code?
What is the difference between " cache unfriendly code " and the " cache friendly " code?
9 Answers
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Vim and Ctags tips and tricks [closed]
...ilarly, after splitting the window with Ctrl-w C-] you can do C-w T (aka Shift-t) to change that split into a new tab.
– dash-tom-bang
Sep 29 '10 at 17:25
1
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What are the default access modifiers in C#?
What is the default access modifier for classes, methods, members, constructors, delegates and interfaces?
9 Answers
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