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On some devices, notably laptops, the Fn key may need to be pressed to use the magic SysRq key, e.g. on Thinkpad Carbon X1 the SysRq is activated by pressing Alt+Fn+S simultaneously, then releasing Fn and S while still holding Alt. [3] On a ChromeOS device, SysRq is activated by pressing Alt+Volume Up (F10)+<key>.
Restricting the format of the input is a possible maintenance (bug fixing) solution — essentially this means validating input information to check that it is in the correct format, in order to reduce the possibility of the magic string being discovered by the user.
An OK button which can be invoked by pressing a return key, or possibly an enter key The enter key is a computer innovation, which in most cases causes a command line , window form, or dialog box to operate its default function.
Since 7 October 2024, Python 3.13 is the latest stable release, and it and, for few more months, 3.12 are the only releases with active support including for bug fixes (as opposed to just for security) and Python 3.9, [55] is the oldest supported version of Python (albeit in the 'security support' phase), due to Python 3.8 reaching end-of-life.
The project was started as a Python application by Paulus Schoutsen in September 2013 and first published publicly on GitHub in November 2013. [24]In July 2017, a managed operating system called Hass.io was initially introduced to make it easier to use Home Assistant on single-board computers like the Raspberry Pi series.
In the 5-bit Baudot codes, BEL is represented by the number 11 (0x0B) when in "figures" mode. [3] The code 0x2F is used in EBCDIC . In the programming language C (created in 1972), and in many languages influenced by it such as Python , the bell character can be placed in a string or character constant with \a . 'a' stands for "alert" or ...
Versioning: A method may be declared to throw exceptions X and Y. In a later version of the code, one cannot throw exception Z from the method, because it would make the new code incompatible with the earlier uses. Checked exceptions require the method's callers to either add Z to their throws clause or handle the exception.
The uniform access principle of computer programming was put forth by Bertrand Meyer (originally in his book Object-Oriented Software Construction).It states "All services offered by a module should be available through a uniform notation, which does not betray whether they are implemented through storage or through computation."