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Command copy exited with code 4 when building - Visual Studio restart solves it
...iably found this to be a file locking issue. Code 4 is Cannot Access File. One partial solution I found is to use the /C option for xcopy (which continues on error). Not really a solution but mostly it has stopped my builds from failing.
Another solution which only works on 32 bit is to use the unl...
What is the purpose of the -m switch?
...ython's primary organizational unit is known as a module. Module's come in one of two flavors: code modules and package modules. A code module is any file that contains python executable code. A package module is a directory that contains other modules (either code modules or package modules). The m...
do { … } while (0) — what is it good for? [duplicate]
...ules, of ALWAYS using curly's on your IF statements, even if you only have ONE operation after the IF. This should be standard practice, IMVHO...
– LarryF
Jul 16 '15 at 20:37
50
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difference between variables inside and outside of __init__()
... note that this example works only for new type classes, with old ones, they will have the same result
– Abdelouahab
Jan 4 '15 at 0:57
...
C# 4.0: Can I use a TimeSpan as an optional parameter with a default value?
...gt;, because it's not visible in the signature.
– Colonel Panic
Jun 22 '12 at 11:02
3
...
Find an item in List by LINQ?
...ngle will return a single result, but will throw an exception if it finds none or more than one (which may or may not be what you want):
string search = "lookforme";
List<string> myList = new List<string>();
string result = myList.Single(s => s == search);
Note SingleOrDefault() wi...
What is the difference between Θ(n) and O(n)?
... Wikipedia: "In mathematics, two variables are proportional if a change in one is always accompanied by a change in the other, and if the changes are always related by use of a constant multiplier. The constant is called the coefficient of proportionality or proportionality constant."
...
JSON Naming Convention (snake_case, camelCase or PascalCase) [closed]
...ava" (camelCase) and "C" (underscores, snake_case)) -- as well as at least one more, kebab-case like longer-name).
It mostly seems to depend on what background developers of the service in question had; those with c/c++ background (or languages that adopt similar naming, which includes many scripti...
What does character set and collation mean exactly?
I can read the MySQL documentation and it's pretty clear. But, how does one decide which character set to use? On what data does collation have an effect?
...
How to use concerns in Rails 4
... models and avoid them getting too fat and messy.
As an example, I'll put one well known pattern, the taggable pattern:
# app/models/product.rb
class Product
include Taggable
...
end
# app/models/concerns/taggable.rb
# notice that the file name has to match the module name
# (applying Rails...