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What reference do I need to use Microsoft.Office.Interop.Excel in .NET?
...You can install by either right clicking on References in your project and selecting Manage NuGet packages... and searching for one of the packages listed below, or install using the Package Manager Console:
PM> Install-Package Microsoft.Office.Interop.Excel
Microsoft.Office.Interop.Excel
Micro...
Good MapReduce examples [closed]
...erations that you can do in MapReduce is the set of normal SQL operations: SELECT, SELECT WHERE, GROUP BY, ect.
Another good example is matrix multiply, where you pass one row of M and the entire vector x and compute one element of M * x.
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Should all jquery events be bound to $(document)?
...object and see if the originating element for the event matches any of the selectors in the delegated event handlers.
Because selectors can be fairly involved, this means that jQuery has to parse each selector and then compare it to the characteristics of the original event target to see if it ma...
How to remove non-alphanumeric characters?
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[\W_]+
$string = preg_replace("/[\W_]+/u", '', $string);
It select all not A-Z, a-z, 0-9 and delete it.
See example here: https://regexr.com/3h1rj
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Is there a use-case for singletons with database access in PHP?
...all one needs to maintain multiple database connections, multiple database selections, multiple database queries, multiple result sets in a given singleton is just keeping them in variables/arrays in the singleton as long as they are needed. This can be as simple as keeping them in arrays, though yo...
What is the Auto-Alignment Shortcut Key in Eclipse?
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Ctrl+Shift+F to invoke the Auto Formatter
Ctrl+I to indent the selected part (or all) of you code.
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Amend a commit that wasn't the previous commit [duplicate]
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Have I misunderstood? It seems you actually have to select a commit before the one you want to change. If sha1 is the hash of the commit you want to change, you'd specify sha1^ on the rebase command. Otherwise, the commit to change doesn't appear in the list.
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How to switch databases in psql?
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You can select the database when connecting with psql. This is handy when using it from a script:
sudo -u postgres psql -c "CREATE SCHEMA test AUTHORIZATION test;" test
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Colon (:) in Python list index [duplicate]
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a[len(a):] - This gets you the length of a to the end. It selects a range. If you reverse a[:len(a)] it will get you the beginning to whatever is len(a).
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NSLayoutConstraint crashes ViewController [duplicate]
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Also, from this article: Select the XIB which is failing to load, and from the panes down the right, find the one entitled "Interface Builder Document". Under here, are settings for deployment versions (which represents the minimum version you want t...