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The DRY principle is stated as "Every piece of knowledge must have a single, unambiguous, authoritative representation within a system". The principle has been formulated by Andy Hunt and Dave Thomas in their book The Pragmatic Programmer. [1] They apply it quite broadly to include database schemas, test plans, the build system, even ...
Computer programming in the punched card era. Student programmers at the Technische Hochschule in Aachen, West Germany in 1970 using IBM 026 keypunches. Punched card from a Fortran program. From the invention of computer programming languages up to the mid-1970s, most computer programmers created, edited and stored their programs line by line ...
Keystroke programming describes a specific way of programming by which each keystroke on a device or application is recorded in some way and then played back so that the recorded key-presses can be repeated multiple times.
The modern Dvorak layout (U.S. layout) Dvorak / ˈdvɔːræk / ⓘ [1] is a keyboard layout for English patented in 1936 by August Dvorak and his brother-in-law, William Dealey, as a faster and more ergonomic alternative to the QWERTY layout (the de facto standard keyboard layout). Dvorak proponents claim that it requires less finger motion [2 ...
Here's an example of a transaction code written in ABAP, which is a programming language used in SAP systems: ``àbap DATA: lv_sender_account TYPE string, lv_recipient_account TYPE string, lv_amount TYPE p DECIMALS 2. lv_sender_account = '123456'. lv_recipient_account = '789012'. lv_amount = 100.00. START-OF-SELECTION.
Computer programming or coding is the composition of sequences of instructions, called programs, that computers can follow to perform tasks. It involves designing and implementing algorithms, step-by-step specifications of procedures, by writing code in one or more programming languages.
A programmer, computer programmer or coder is an author of computer source code – someone with skill in computer programming. The professional titles software developer and software engineer are used for jobs that require a programmer.
In software engineering, rubber duck debugging (or rubberducking) is a method of debugging code by articulating a problem in spoken or written natural language. The name is a reference to a story in the book The Pragmatic Programmer in which a programmer would carry around a rubber duck and debug their code by forcing themselves to explain it ...
Literate programming is a programming paradigm introduced in 1984 by Donald Knuth in which a computer program is given as an explanation of how it works in a natural language, such as English, interspersed (embedded) with snippets of macros and traditional source code, from which compilable source code can be generated. [1]
Programmer's key. The programmer's key, or interrupt button, is a button or switch on Classic Mac OS -era Macintosh systems, which jumps to a machine code monitor. The symbol on the button is ⎉: U+2389 ⎉ CIRCLED HORIZONTAL BAR WITH NOTCH.