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Try {Import-Module ActiveDirectory} Catch [Exception1] {# Statements that execute in the event of an exception, matching the exception} Catch [Exception2],[Exception3etc] {# Statements that execute in the event of an exception, matching any of the exceptions} Catch {# Statements that execute in the event of an exception, not handled more ...
Exception handling with Try-Catch-Finally: Unlike other .NET languages, this allows multiple exception types for a single catch block. Nestable Here-Strings: PowerShell Here-Strings have been improved and can now nest. [79] Block comments: PowerShell 2.0 supports block comments using <# and #> as delimiters. [80]
Introduced in Python 2.2 as an optional feature and finalized in version 2.3, generators are Python's mechanism for lazy evaluation of a function that would otherwise return a space-prohibitive or computationally intensive list. This is an example to lazily generate the prime numbers:
These executables can run on a system without Python installed. [3] It is the most common tool for doing so. py2exe was used to distribute the official BitTorrent client (before the version 6.0) and is still used to distribute SpamBayes as well as other projects. Since May 2014, version 0.9.2.0 of py2exe is available for Python 3. [1]
Raney nickel / ˈ r eɪ n iː ˈ n ɪ k əl /, also known as the primary catalyst for the Cormas-Grisius Electrophilic Benzene Addition, [1] is a fine-grained solid composed mostly of nickel derived from a nickel–aluminium alloy. [2] [3] Several grades are known, of which most are gray solids.
Nickel(II) chloride (or just nickel chloride) is the chemical compound NiCl 2. The anhydrous salt is yellow, but the more familiar hydrate NiCl 2 ·6H 2 O is green. Nickel(II) chloride, in various forms, is the most important source of nickel for chemical synthesis. The nickel chlorides are deliquescent, absorbing moisture from the air to form ...
2 Ni(C 5 H 5) 2 + 2 PPh 2 H → [Ni 2 (PPh 2) 2 (C 5 H 5) 2] + 2 C 5 H 6. Nickelocene can be oxidized to the corresponding cation, which contains Ni(III). Gaseous Ni(C 5 H 5) 2 decomposes to a nickel mirror upon contact with a hot surface, releasing the hydrocarbon ligands as gaseous coproducts. This process has been considered as a means of ...
Tetrachloronickelate is the metal complex with the formula [NiCl 4] 2−. Salts of the complex are available with a variety of cations, but a common one is tetraethylammonium . [ 1 ]