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Overriding fields or properties in subclasses

... Another option is to have a read-only property in the base class which is set from a constructor parameter: abstract class Mother { private readonly int myInt; public int MyInt { get { return myInt; } } protected Mother(int myInt) { this.myInt = myInt; } } class Daugh...
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How to run a PowerShell script from a batch file

... Otherwise PowerShell considers the arguments a line to execute and while Set-ExecutionPolicy is a cmdlet, it has no -File parameter. share | improve this answer | follow ...
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Check if table exists without using “select from”

...HOW TABLES SHOW TABLES LIKE 'yourtable'; If there is a row in the resultset, table exists. share | improve this answer | follow | ...
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How to make an element in XML schema optional?

... Set the minOccurs attribute to 0 in the schema like so: <?xml version="1.0"?> <xs:schema version="1.0" xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"> <xs:element name="reques...
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How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited

... play tricks like this with a temporary variable: declare @s varchar(max) set @s = '' select @s = @s + City + ',' from Locations select @s It's definitely less code than walking over a cursor, and probably more efficient. ...
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Separation of business logic and data access in django

...mail server, your system log, etc. Such scenario's also really help you in setting up a Test Driven Development environment. And finally, thinking in commands really helps you create a task-oriented application. Your users will appreciate this :-) Expressing Commands Django provides two easy ways of...
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href image link download on click

... The easiest way of creating download link for image or html is setting download attribute, but this solution works in modern browsers only. <a href="/path/to/image" download="myimage"><img src="/path/to/image" /></a> "myimage" is a name of file to download. Extension...
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Center image in table td in CSS

...een trying to align an image to the center of the table td. It worked with setting margin-left to a specific value but it also increased the size of td too and that isn't exactly what I wanted ...
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Difference between std::system_clock and std::steady_clock?

...@Charles: Also, POSIX time is not "steady" -- if the user changes the time setting on their computer POSIX time will change. If you are cooking an egg, and need a timer that lasts 4 minutes, then you need it to last 4 minutes even if the current time is changed. If you've got a timer set for a meeti...
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Truncating long strings with CSS: feasible yet?

...erflow: ellipsis; -o-text-overflow: ellipsis; -moz-binding: url('assets/xml/ellipsis.xml#ellipsis'); } ellipsis.xml file contents <?xml version="1.0"?> <bindings xmlns="http://www.mozilla.org/xbl" xmlns:xbl="http://www.mozilla.org/xbl" xmlns:xul="http://www.mozilla.org/keym...