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Maximum Length of Command Line String
...e limited to 260 characters, CreateProcess to 32767, and ShellExecute to about 2048. According to Raymond Chen's article on the subject
– NtscCobalt
Oct 24 '12 at 21:47
...
What is the equivalent of the C# 'var' keyword in Java?
...
There is none. Alas, you have to type out the full type name.
Edit: 7 years after being posted, type inference for local variables (with var) was added in Java 10.
Edit: 6 years after being posted, to collect some of the comments from below:
The reason C# h...
`levels
...-. levels<- is just a regular function that takes an input and gives an output; it does not mutate anything.
One consequence of that is that, according to the above rule, <- must be recursive:
levels(factor(x)) <- y
is
factor(x) <- `levels<-`(factor(x), y)
is
x <- `factor&l...
Detecting an undefined object property
...declared (note: different from having a value of undefined) identifier without an early error:
if(typeof myVariable === 'undefined') {
alert('myVariable is either the special value `undefined`, or it has not been declared');
}
In versions of JavaScript prior to ECMAScript 5, the property named ...
scala vs java, performance and memory? [closed]
...
Scala makes it very easy to use enormous amounts of memory without realizing it. This is usually very powerful, but occasionally can be annoying. For example, suppose you have an array of strings (called array), and a map from those strings to files (called mapping). Suppose you want ...
Which, if any, C++ compilers do tail-recursion optimization?
... would otherwise result in a stack overflow — or looking at the assembly output.
As an interesting historical note, tail call optimisation for C was added to the GCC in the course of a diploma thesis by Mark Probst. The thesis describes some interesting caveats in the implementation. It's worth r...
Easier way to debug a Windows service
...f you really need that) and that you can just hit F5 in Visual Studio (without the need to modify the project settings to include that /console Option).
Technically, the Environment.UserInteractive checks if the WSF_VISIBLE Flag is set for the current window station, but is there any other reason w...
How to pull remote branch from somebody else's repo
... add coworker git://path/to/coworkers/repo.git
git fetch coworker
git checkout --track coworker/foo
This will setup a local branch foo, tracking the remote branch coworker/foo. So when your co-worker has made some changes, you can easily pull them:
git checkout foo
git pull
Response to commen...
Locking pattern for proper use of .NET MemoryCache
... is not a concern here.
Both of these possibilities have to be thought about of course, though the only time having two instances of the same string existing can be a problem is if you're doing very particular optimisations that don't apply here*.
So, we're left with the possibilities:
It is ch...
Why does pylint object to single character variable names?
... obj_generator, path, etc. It may take an extra second or two to type them out, but the time you save trying to figure out what you wrote even half an hour from then is well worth it.
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