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Difference between Mock / Stub / Spy in Spock test framework
... replacing a real one, returning something like null or 0 for each method call. You use a mock if you need a dummy instance of a complex class which would otherwise use external resources like network connections, files or databases or maybe use dozens of other objects. The advantage of mocks is tha...
Why is there a difference in checking null against a value in VB.NET and C#?
...I don't know yet". Then the comparison of 5 to "I don't know yet". is naturally "I don't know yet"; ie NULL. This has the additional advantage of mirroring the behaviour of NULL in (most if not all) SQL databases. This is also a more standard (than C#'s) interpretation of three-valued logic, as expl...
Why .NET String is immutable? [duplicate]
As we all know, String is immutable. What are the reasons for String being immutable and the introduction of StringBuilder class as mutable?
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Output array to CSV in Ruby
...enerate_line(row) }.join("")
#=> "a1,a2,a3\nb1,b2,b3\nc1,c2,c3\n"
Do all of the above and save to a csv, in one line.
File.open("ss.csv", "w") {|f| f.write(rows.inject([]) { |csv, row| csv << CSV.generate_line(row) }.join(""))}
NOTE:
To convert an active record database to csv would...
How do you debug PHP scripts? [closed]
...r_dump and print at various points to see where your flow goes wrong. When all else fails though and all I have is SSH and vim I still var_dump()/die() to find where the code goes south.
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IntelliJ - Convert a Java project/module into a Maven project/module
...ou mean adding source repository elements, I think you need to do that manually–not sure.
Pre-IntelliJ 13 this won't convert the project to the Maven Standard Directory Layout, 13+ it will.
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Why can't variables be declared in a switch statement?
...lity and consistency in the code. In the old days, you might have automatically got an "extra" stack frame, but now that should not be the case for any decent optimizing compiler.
– Tall Jeff
Sep 18 '08 at 14:37
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Save the console.log in Chrome to a file
...the flags:
--enable-logging --v=1
This logs everything Chrome does internally, but it also logs all the console.log() messages as well. The log file is called chrome_debug.log and is located in the User Data Directory.
Filter the log file you get for lines with CONSOLE(\d+).
Note that console l...
Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.10:test
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Locate the dependencies you're missing with mvn dependency:tree, then install them manually, and build your project with the -o (offline) option.
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Is it possible to serialize and deserialize a class in C++?
...e it, here.
The only native way to do it is to use streams. That's essentially all the Boost::serialization library does, it extends the stream method by setting up a framework to write objects to a text-like format and read them from the same format.
For built-in types, or your own types with op...