Parse the Accept request HTTP header advertises which content types, expressed as MIME types, https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept

X3D bboxSize Three-tuple floating-point values with optional scientific notation, bounded non-negative or else -1 -1 -1 sentinel value. Derived from SFVec3f http://www.web3d.org/specifications/X3dRegularExpressions.html#bboxSize

further editing is required in code to get the filename without extension

The username should be at least 2 characters long, can have lower and uppercase letters, and can only have numbers in the end.

Primer ejercicio del Curso de Expresiones Regulares

Curso de Expresiones Regulares: Modos

Curso de Expresiones Regulares: Meta Caracteres

Curso de Expresiones Regulares: Cuantificadores y Repetición

Get rid of initial, trailing spaces, and extra middle spaces (more than one space in the middle of a string)

Validates US and International. Spaces, dot or dash separator. Optional () These formats and variations of them pass this validation 1 (800) 888 8078 +1 402.536.4184 ext 8862088 +91.986.964.4357 +972546790128...