Self-tutoring about Python: the tutor mentions a curiosity. Experimenting with the print function on the Python interpreter, I noticed that print(‘hello\rain’) will yield ainlo The reason, I believe, is that \r is interpreted as the carriage return. As such, it …
Self-tutoring about Python: the tutor mentions constants. To my knowledge, Python doesn’t have user-defined constants. However, there is a way to accomplish a similar impression: a namespace. A namespace, in this case, is a separate file wherein the constant is …
Computer science: Python: user-defined constants Read more »
Self-tutoring about computer science: the tutor mentions the sort() method in Python. Python lists can be sorted using the_list.sort(). However, it might not work the way one would first think. the_list.sort() rewrites the_list in sorted order. However, it doesn’t return …
Tutoring computer science, terms arise. The tutor mentions memoization. Let’s imagine a function called F1. Let’s further imagine that F1 uses a lot of resources – calls to it take a lot of computation power. In such a situation, you …
Tutoring computer science, terms are important. The tutor mentions type parameter. The motivation for a type parameter is easiest to imagine with a strongly typed language like Java. Typically, such a language insists on knowing the type of an argument …
Tutoring computer science, static methods can arise. The specific language does provide meaningful context in how a programmer perceives static methods. However, the general idea is that a static method can be invoked from the class itself rather than needing …
Tutoring computer science, its own terms arise. The tutor mentions code motion. Code motion refers to evaluating a sentry value once, outside a loop, then storing the value in a variable which will be used for the test in the …
Self-tutoring about programming: the tutor mentions a difference between Python and JavaScript he’s noticed. With Python, if you want to continue to the next line (perhaps for easier reading), it seems a backslash, then Return, will work: the_var= (3 + …
Programming: newline in rhs expression: Python vs JavaScript Read more »
Tutoring comp sci, casting will come up: the tutor defines it. Casting, in computer science, means changing a variable’s type to a different one. Typically, the result will be stored in a new variable. An example where casting might be …
Self-tutoring about regex: the tutor mentions the newline in a detection pattern. In PHP regex, \n means ‘newline’. Therefore, $pat=’/\n/’; will be found in a string containing a newline. Source: w3schools.com