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Hace 15 horas · History Ross Ihaka, co-originator of R. R was started by professors Ross Ihaka and Robert Gentleman as a programming language to teach introductory statistics at the University of Auckland. The language was inspired by the S programming language, with most S programs able to run unaltered in R. The language was also inspired by Scheme's lexical scoping, allowing for local variables.
Hace 15 horas · San Vicente de la Barquera – the old town has preserved the walls along with the castle. Santander – the old town had medieval defensive walls. A stretch of wall alongside Calle de Cadiz is all that remains. Santiago de Compostela – only a gate (Arco de Mazarelos) remains.
Hace 15 horas · Copper. face-centered cubic (fcc) ( cF4) Copper is a chemical element; it has symbol Cu (from Latin cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and ...
