Hayk Mirzayans Insect Museum offers training courses, and helps other scientific research centers in completion and maintenance of their insect collections. ITRD acts as the National Identification Service for governmental or non-governmental organizations, publishes various articles, reports, books, data banks and checklists of its holdings, and provides these information free of charge to all visitors. Hayk Mirzayans Insect Museum The Hayk Mirzayans Insect Museum (HMIM) is the largest insect collection in Iran with over 4 million insect specimens, including 20–25,000 local species, hundreds of primary types and paratypes, and a representative collection of exotic insects, especially tropical butterflies. In 1943, Iranian entomologist established a
Comma operator to how sequences of statements are enclosed in braces: codice_2 is a sequence of expressions, separated by commas, which evaluates to the last expression codice_3 while codice_4 is a sequence of statements, and does not evaluate to any value. A comma can only occur between two expressions – commas "separate" expressions – unlike the semicolon, which occurs at the end of a (non-block) statement – semicolons "terminate" statements. The comma operator has the lowest precedence of any C operator, and acts as a sequence point. In a combination of commas and semicolons, semicolons have lower precedence than commas, as semicolons