# Section 7: A Longer ExampleclassMyRationaldefinitialize(num,den=1)# second argument has a defaultifden ==0raise"MyRational received an inappropriate argument"elsifden <0# notice non-english word elsif@num= - num# fields created when you assign to them@den= - denelse@num= num# semicolo...
In this tutorial we will learn about File handling in Ruby programming language. We will learn how to read data from a file, write data into a file, append data in an existing file with simple code examples. So let's get started. 在本教程中,我们将学习Ruby编程语言中的文件处理。 我们将...
There are some accessing macros for structure members, for example ‘RSTRING_LEN(str)’ to get the size of the Ruby String object. The allocated region can be accessed by ‘RSTRING_PTR(str)’.Notice: Do not change the value of the structure directly, unless you are responsible for the ...
[nd_pid], .., &[nd_body]) # | | # example: def foo(a, b, opt1=1, opt2...
Ruby’s Boolean operators are built into the language and are not based on methods: classes, for example, cannot define their own && method. The reason for this is that Boolean operators can be applied to any value and must behave consistently for any kind of operand. Ruby defines special ...
For example, sqrt is the module function defined in Math module. It can be called in the following way: Math.sqrt(4) or include Math sqrt(4) To define module functions, use: void rb_define_module_function(VALUE module, const char *name, VALUE (*func)(), int argc) In addition, ...
As an example of a compelling JRuby use case, a former co-worker of mine once had a CPU-intensive problem that he initially solved with threads in Ruby 1.9.3. When he switched to JRuby and used Java’s java.util.concurrent.Executors, he saw a performance improvement of multiple orders of...
Example: {"version":"0.2.0","configurations": [// Launch the debugger for any given program. In this case, it will run the current file using Ruby{"type":"ruby_lsp","name":"Debug","request":"launch","program":"ruby ${file}"},// Launch the debugger for the current test file{...
In our example we asked OpenAI to translate ‘I want a cup on milk’ into French. OpenAI provides us with the following output: Jevoudrais une tasse de lait s'il vous plaît. Questioning the Accuracy of the Translation When translating text, accuracy is one of the most important criteria...
In this hands-on video course, you'll learn blocks and iterators by example withover 40 real-world examples! Get The Course → “I've been using Ruby for a few years and bumped into blocks but I was never really getting them.Your course helped me finally wrap my head around them!Now...