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The paper examines main features of nomination mechanism for operators in Objective-C and Swift programming languages. Current study analyzes goals and processes of programming languages creation, criteria for nomination of operation, and the principles of nomination. Special complexity of nominating operators consists of their adaptation to the host language system. The programming language is one of the least studied objects in the field of technical translation. Translation of such texts is a rather complex sphere of creative activity, and professional performance of work is guaranteed only by a qualitatively prepared specialist. As a preliminary stage of translation, the paper dealswith the principles of the nomination of operators in programming languages, in order to ease the understanding oforiginal texts. The study provides a detailed component analysis, which makes clear main objects and phenomena laid down in the principle of nomination of a specific operator. Nowadays programming languages is an integral part ofmodern engineering as they allow creating useful software and research platforms. Social responsibilities in modern engineering to a certain extent are defined by a good knowledge of programming languages.