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Generating a SHA-256 hash from the Linux command line
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NOTE: on OS X (BSD), it's echo -n foobar | shasum -a 256
– Olie
Oct 16 '14 at 15:26
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PHP: exceptions vs errors?
Maybe I'm missing it somewhere in the PHP manual, but what exactly is the difference between an error and an exception? The only difference that I can see is that errors and exceptions are handled differently. But what causes an exception and what causes an error?
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Print string to text file
I'm using Python to open a text document:
5 Answers
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node.js hash string?
...md5sum.update(d);
});
s.on('end', function() {
var d = md5sum.digest('hex');
console.log(d + ' ' + filename);
});
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Difference between Covariance & Contra-variance
...types are said to be "assignment compatible". Let's write "a value of type X can be assigned to a variable of type Y" in a shorter form: X ⇒ Y. Notice that this is a "fat arrow".
So in our first subset, here are all the assignment compatibility relationships:
Tiger ⇒ Tiger
Tiger ⇒ Animal
A...
Where is Maven' settings.xml located on mac os?
Where is Maven' settings.xml located on mac os?
8 Answers
8
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How do I remedy “The breakpoint will not currently be hit. No symbols have been loaded for this docu
A C# desktop application on the express edition worked, but then it didn't work 5 seconds later.
112 Answers
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cannot download, $GOPATH not set
...icial Go site discusses GOPATH and how to lay out a workspace directory.
export GOPATH="$HOME/your-workspace-dir/" -- run it in your shell, then add it to ~/.bashrc or equivalent so it will be set for you in the future. Go will install packages under src/, bin/, and pkg/, subdirectories there. You'...
Just what is an IntPtr exactly?
...simply put null or IntPtr.Zero and found most functions to work. What exactly is it and when/why is it used?
8 Answers
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Reference: What is variable scope, which variables are accessible from where and what are “undefined
...ple: PHP has function scope. That's the only kind of scope separator that exists in PHP. Variables inside a function are only available inside that function. Variables outside of functions are available anywhere outside of functions, but not inside any function. This means there's one special scope ...