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  2. Peek (data type operation) - Wikipedia

    en.wikipedia.org/wiki/Peek_(data_type_operation)

    This behavior can be axiomatized in various ways. For example, a common VDM (Vienna Development Method) description of a stack defines top (peek) and remove as atomic, where top returns the top value (without modifying the stack), and remove modifies the stack (without returning a value). [1] In this case pop is defined in terms of top and remove.

  3. Stack (abstract data type) - Wikipedia

    en.wikipedia.org/wiki/Stack_(abstract_data_type)

    Simple representation of a stack runtime with push and pop operations. In computer science, a stack is an abstract data type that serves as a collection of elements with two main operations: Push, which adds an element to the collection, and; Pop, which removes the most recently added element.

  4. Class invariant - Wikipedia

    en.wikipedia.org/wiki/Class_invariant

    The truth of the invariant then enables Pop to rely on the fact that the top of the stack is a valid value, which is needed to prove Pop's postcondition. A more complex type invariant would enable the proof of full functional correctness, such as that Pop returns the value passed into a corresponding Push, but in this case we are merely trying ...

  5. Turn pop-ups off or on in your browser - AOL Help

    help.aol.com/articles/disable-or-enable-pop-ups...

    If you click on links in a legitimate email and get a notice that link can't be opened, you will need to either temporarily turn off your pop-up blocker, or add AOL Mail to the list of sites you allow pop-ups from. • Manage pop-ups in Edge • Manage pop-ups in Safari • Manage pop-ups in Firefox • Manage pop-ups in Chrome

  6. pip (package manager) - Wikipedia

    en.wikipedia.org/wiki/Pip_(package_manager)

    In 2011, the Python Packaging Authority (PyPA) was created to take over the maintenance of pip and virtualenv from Bicking, led by Carl Meyer, Brian Rosner, and Jannis Leidel. [ 10 ] With the release of pip version 6.0 (2014-12-22), the version naming process was changed to have version in X.Y format and drop the preceding 1 from the version label.

  7. Wikipedia : Tools/Navigation popups

    en.wikipedia.org/wiki/Wikipedia:Tools/Navigation...

    Clear pop-up cache [b] Enable/disable previews [b] Enable/disable pop-ups [b] Preview diffs and access both revisions in watchlist, history and related changes; Preview selected wikilinks when editing (use the mouse to select one wikilink) One-click revert of vandalism from history browser (see image) Shortcut keys (optional)

  8. Set (abstract data type) - Wikipedia

    en.wikipedia.org/wiki/Set_(abstract_data_type)

    pop(S): returns an arbitrary element of S, deleting it from S. [1] pick(S): returns an arbitrary element of S. [2] [3] [4] Functionally, the mutator pop can be interpreted as the pair of selectors (pick, rest), where rest returns the set consisting of all elements except for the arbitrary element. [5] Can be interpreted in terms of iterate. [a]

  9. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    A snippet of Python code with keywords highlighted in bold yellow font. The syntax of the Python programming language is the set of rules that defines how a Python program will be written and interpreted (by both the runtime system and by human readers). The Python language has many similarities to Perl, C, and Java. However, there are some ...