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  2. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    Python supports a wide variety of string operations. Strings in Python are immutable, so a string operation such as a substitution of characters, that in other programming languages might alter the string in place, returns a new string in Python. Performance considerations sometimes push for using special techniques in programs that modify ...

  3. Comparison of programming languages (syntax) - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_programming...

    The enclosed text becomes a string literal, which Python usually ignores (except when it is the first statement in the body of a module, class or function; see docstring). Elixir. The above trick used in Python also works in Elixir, but the compiler will throw a warning if it spots this.

  4. Backtick - Wikipedia

    en.wikipedia.org/wiki/Backtick

    Scala: An identifier may also be formed by an arbitrary string between backticks. The identifier then is composed of all characters excluding the backticks themselves. [12] Tom: The backtick creates a new term or to calls an existing term. Unlambda: The backtick character denotes function application.

  5. Hash function - Wikipedia

    en.wikipedia.org/wiki/Hash_function

    In a hash table, a hash function takes a key as an input, which is associated with a datum or record and used to identify it to the data storage and retrieval application. The keys may be fixed-length, like an integer, or variable-length, like a name. In some cases, the key is the datum itself.

  6. Comparison of programming languages (string functions ...

    en.wikipedia.org/wiki/Comparison_of_programming...

    StringLength[string] Mathematica «FUNCTION» LENGTH(string) or «FUNCTION» BYTE-LENGTH(string) number of characters and number of bytes, respectively COBOL: string length string: a decimal string giving the number of characters Tcl: ≢ string: APL: string.len() Number of bytes Rust [30] string.chars().count() Number of Unicode code points ...

  7. Snake case - Wikipedia

    en.wikipedia.org/wiki/Snake_case

    Prolog, for both atoms (predicate names, function names, and constants) and variables [20] Python, for variable names, function names, method names, and module or package (i.e. file) names [3] PHP uses SCREAMING_SNAKE_CASE for class constants; PL/I [21] R, for variable names, function names, and argument names, especially in the tidyverse style ...

  8. String interpolation - Wikipedia

    en.wikipedia.org/wiki/String_interpolation

    In computer programming, string interpolation (or variable interpolation, variable substitution, or variable expansion) is the process of evaluating a string literal containing one or more placeholders, yielding a result in which the placeholders are replaced with their corresponding values.

  9. Reserved word - Wikipedia

    en.wikipedia.org/wiki/Reserved_word

    For example, C++11 defines a new thread_local keyword to designate static storage local to one thread. C11 defines the new keyword as _Thread_local. In the new C11 header <threads.h>, there is a macro definition to provide the normal‐looking name: [10] #define thread_local _Thread_local