Pascal (unit) dB SPL, or 20 µPa. The airtightness of buildings is measured at 50 Pa. The units of atmospheric pressure commonly used in meteorology were formerly the bar, which was close to the average air pressure on Earth, and the millibar. Since the introduction of SI units, meteorologists generally measure pressures in hectopascals (hPa) unit, equal to 100 pascals or 1 millibar. Exceptions include Canada, which use kilopascals (kPa). In many other fields of science, the SI is preferred, which means Pa with a prefix (in multiples of 1000) is preferred. Many countries also use the millibars. In practically all other
Comparison of Object Pascal and C (if it has to be), i.e., its storage management is handled by the compiler (or more accurately, by the runtime code inserted by the compiler in the executable). String concatenation is done with the codice_65 operator, and string comparison can be done with standard relational operators (case sensitive): codice_66. Object Pascal also provides C-compatible strings under the type codice_67, with manipulation routines defined in the codice_68 unit. Moreover, Object Pascal provides a wide variety of string types: For convenience, the plain codice_76 type is provided, which, depending on a compiler switch, could mean codice_69, codice_71 or codice_74. An additional convention