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  2. For loop - Wikipedia

    en.wikipedia.org/wiki/For_loop

    If the condition is true, then the lines of code inside the loop are executed. The advancement to the next iteration part is performed exactly once every time the loop ends. The loop is then repeated if the condition evaluates to true. Here is an example of the C-style traditional for-loop in Java.

  3. BASIC-PLUS - Wikipedia

    en.wikipedia.org/wiki/BASIC-PLUS

    As a smart terminal with cursor control could not be guaranteed, BASIC-PLUS used the common system of prefixing all source code with a line number. The code was edited by typing in the number and then changing the contents of the following code. A line of code could be removed by typing in its line number and nothing else, thereby setting it to ...

  4. Control flow - Wikipedia

    en.wikipedia.org/wiki/Control_flow

    A label marks a position within source code and has no other effect. Line numbers are an alternative to a named label used in some languages (such as BASIC). They are whole numbers placed at the start of each line of text in the source code. Languages which use these often impose the constraint that the line numbers must increase in value in ...

  5. Shell script - Wikipedia

    en.wikipedia.org/wiki/Shell_script

    One example of this is Bash, which offers the same grammar and syntax as the Bourne shell, and which also provides a POSIX-compliant mode. [13] As such, most shell scripts written for the Bourne shell can be run in BASH, but the reverse may not be true since BASH has extensions which are not present in the Bourne shell.

  6. Foreach loop - Wikipedia

    en.wikipedia.org/wiki/Foreach_loop

    Go's foreach loop can be used to loop over an array, slice, string, map, or channel. Using the two-value form gets the index/key (first element) and the value (second element): for index , value := range someCollection { // Do something to index and value }

  7. Infinite loop - Wikipedia

    en.wikipedia.org/wiki/Infinite_loop

    One common cause, for example, is that a programmer intends to iterate over sequence of nodes in a data structure such as a linked list or tree, executing the loop code once for each node. Improperly formed links can create a reference loop in the data structure, where one node links to another that occurs earlier in the sequence.

  8. Duff's device - Wikipedia

    en.wikipedia.org/wiki/Duff's_device

    The basic idea of loop unrolling is that the number of instructions executed in a loop can be reduced by reducing the number of loop tests, sometimes reducing the amount of time spent in the loop. For example, in the case of a loop with only a single instruction in the block code, the loop test will typically be performed for every iteration of ...

  9. Read–eval–print loop - Wikipedia

    en.wikipedia.org/wiki/Read–eval–print_loop

    The name read–eval–print loop comes from the names of the Lisp primitive functions which implement this functionality: The read function accepts an expression from the user, and parses it into a data structure in memory. For instance, the user may enter the s-expression (+ 1 2 3), which is parsed into a linked list containing four data ...

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