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Polymorphism vs Overriding vs Overloading
...class is abstract because the goPee() method is not definable for Humans. It is only definable for the subclasses Male and Female. Also, Human is an abstract concept — You cannot create a human that is neither Male nor Female. It’s got to be one or the other.
So we defer the implementation b...
NAnt or MSBuild, which one to choose and when?
...'ve been able to determine:
NAnt:
Cross-platform (supports Linux/Mono). It may be handy for installing a web site to multiple targets (that is, Linux Apache and Windows IIS), for example.
95% similar in syntax to Ant (easy for current Ant users or Java builders to pick up)
Integration with NUnit...
Can I mask an input text in a bat file?
I am writing a batch file to execute some other programs. In this case I need to prompt for a password. Do I have any way to mask the input text? I don't need to print ******* characters instead of input characters. Linux's Password prompt behavior (Print nothing while typing) is enough.
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Why does cURL return error “(23) Failed writing body”?
It works ok as a single tool:
11 Answers
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Java Naming Convention with Acronyms [closed]
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Since it looks like the answer is that there is no single standard for this in Java, I'd like to note that the .NET Framework Design Guidelines do specify this.
Now before slamming me for being off topic, please remember that the...
Why don't C++ compilers define operator== and operator!=?
...g fan of letting the compiler do as much work for you as possible. When writing a simple class the compiler can give you the following for 'free':
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What exactly does big Ө notation represent?
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It means that the algorithm is both big-O and big-Omega in the given function.
For example, if it is Ө(n), then there is some constant k, such that your function (run-time, whatever), is larger than n*k for sufficiently l...
Neither BindingResult nor plain target object for bean name available as request attribute [duplicat
...follow
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edited Aug 26 '14 at 19:45
Jeroen Vannevel
39.9k2020 gold badges8989 silver badges149149 bronze badges
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Gem::LoadError for mysql2 gem, but it's already in Gemfile
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If you have this error when upgrading to rails 4.2.4 (also with rails 4.1.5) try using this version of mysql2:
gem 'mysql2', '~> 0.3.18'
Apparently mysql2 isn't still compatible with newer version of rails because rails 4.2.4 is pretty new as the time of answering this question ...
What are the advantages of using nullptr?
... conceptually does the same thing for the three pointers (safe pointer initialization):
7 Answers
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