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[4]: 114 A DataFrame is a 2-dimensional data structure of rows and columns, similar to a spreadsheet, and analogous to a Python dictionary mapping column names (keys) to Series (values), with each Series sharing an index. [4]: 115 DataFrames can be concatenated together or "merged" on columns or indices in a manner similar to joins in SQL.
Move to beginning of line Home: Home: Ctrl+A. or Home. Move to end of line End: End: Ctrl+E. or End. Reverse search of history F8: F8: Ctrl+R: Pause execution of the current job Ctrl+Z: Insert the next character typed verbatim Ctrl+V: Autocomplete command/file name Tab ↹ (enabled by default in Windows XP and later) Tab ↹: Tab ↹ (usually ...
These are the standard shortcuts: Control-Z (or ⌘ Command+Z) to undo; Control-X (or ⌘ Command+X) to cut; Control-C (or ⌘ Command+C) to copy; Control-V (or ⌘ Command+V) to paste; The IBM Common User Access (CUA) standard also uses combinations of the Insert, Del, Shift and Control keys. Early versions of Windows used the IBM standard.
Moves cursor to beginning of the line n (default 1) lines up. (not ANSI.SYS) CSI n G CHA: Cursor Horizontal Absolute: Moves the cursor to column n (default 1). (not ANSI.SYS) CSI n ; m H CUP: Cursor Position Moves the cursor to row n, column m. The values are 1-based, and default to 1 (top left corner) if omitted.
Command-line completion generally only works in interactive mode. That is, it cannot be invoked to complete partially typed commands in scripts or batch files, even if the completion is unambiguous. The name tab completion comes from the fact that command-line completion is often invoked by pressing the tab key.
Control-C is a common computer command.It is generated by holding down the Ctrl key and typing the C key.. In graphical user interface environments, control+C is often used to copy highlighted text to the clipboard. [1]
A move command that moves a directory entry to a new directory was first implemented within Multics. It can be contracted to mv. [1] Later, the mv command appeared in Version 1 Unix [2] and became part of the X/Open Portability Guide issue 2 of 1987. [3] The version of mv bundled in GNU coreutils was written by Mike Parker, David MacKenzie, and ...
The most commonly encountered case of a moving frame is for the bundle of tangent frames (also called the frame bundle) of a manifold.In this case, a moving tangent frame on a manifold M consists of a collection of vector fields e 1, e 2, …, e n forming a basis of the tangent space at each point of an open set U ⊂ M.