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How can I generate an MD5 hash?
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You need java.security.MessageDigest.
Call MessageDigest.getInstance("MD5") to get a MD5 instance of MessageDigest you can use.
The compute the hash by doing one of:
Feed the entire input as a byte[] and calculate the hash in one operation ...
DistutilsOptionError: must supply either home or prefix/exec-prefix — not both
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Are you using OS X and Homebrew? The Homebrew python page https://github.com/Homebrew/brew/blob/master/docs/Homebrew-and-Python.md calls out a known issue with pip and a work around.
Worked for me.
You can make this "empty prefix" the default by adding a
~/.pydistutils.cfg file with t...
Why does the C# compiler not fault code where a static method calls an instance method?
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UPDATE: Below answer was written in 2012, before the introduction of C# 7.3 (May 2018). In What's new in C# 7.3, the section Improved overload candidates, item 1, it is explained how the overload resolution rules have changed so that non-static overloa...
What is meaning of boolean value returned from an event-handling method in Android
...ods return a boolean value. What is that true/false value mean ? what will it result in to the subsequence events ?
6 Answe...
What characters are allowed in DOM IDs? [duplicate]
... | [#x203F-#x2040]
Source: Extensible Markup Language (XML) 1.0 (Fifth Edition) 2.3
For HTML the following applies:
id = name [CS]
This attribute assigns a name to an element. This name must be unique in a document.
ID and NAME tokens must begin with a
letter ([A-Za-z]) and may be followed
by any...
How to use base class's constructors and assignment operator in C++?
I have a class B with a set of constructors and an assignment operator.
5 Answers
5
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Recursion in Angular directives
...d in the thread mentioned by @dnc253, I abstracted the recursion functionality into a service.
module.factory('RecursionHelper', ['$compile', function($compile){
return {
/**
* Manually compiles the element, fixing the recursion loop.
* @param element
* @param...
Using member variable in lambda capture list inside a member function
The following code compiles with gcc 4.5.1 but not with VS2010 SP1:
4 Answers
4
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What does the property “Nonatomic” mean?
...nge/read the property at once, badness can happen. You can get partially-written values or over-released/retained objects, which can easily lead to crashes. (This is potentially a lot faster than an atomic accessor, though.)
If you use the default (which is atomic; there used to be no keyword for t...
How do I alter the position of a column in a PostgreSQL database table?
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"Alter column position" in the PostgreSQL Wiki says:
PostgreSQL currently defines column
order based on the attnum column of
the pg_attribute table. The only way
to change column order is either by
recreating the table, or by addi...