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How to reset or change the MySQL root password?

How do I change the MySQL root password and username in ubuntu server? Do I need to stop the mysql service before setting any changes? ...
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Better way to cast object to int

...() — For converting an object of unknown type. It will use an explicit and implicit conversion or IConvertible implementation if any are defined. as int? — Note the "?". The as operator is only for reference types, and so I used "?" to signify a Nullable<int>. The "as" operator works li...
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Why does the JVM still not support tail-call optimization?

...tail-call-optimizations , there seems to be a prototype implementation and MLVM has listed the feature as "proto 80%" for some time now. ...
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SQL Server Index Naming Conventions [closed]

Is there some standard way to name indexes for SQL Server? It seems that the primary key index is named PK_ and non-clustered indexes typically start with IX_. Are there any naming conventions beyond that for unique indexes? ...
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PEP 8, why no spaces around '=' in keyword argument or a default parameter value?

...hout spaces. It is easier to recognize that we are using keyword arguments and not assigning a variable to itself. Also, parameters tend to go in the same line whereas assignments usually are each one in their own line, so saving space is likely to be an important matter there. ...
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POST unchecked HTML checkboxes

...y default. My users will probably uncheck a few (if any) of the checkboxes and leave the rest checked. 42 Answers ...
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Guaranteed lifetime of temporary in C++?

...t of any other expression. That is in your case after the function returns and the value is evaluated. So, it will work all nice. It's in fact what makes expression templates work: They can keep hold references to that sort of temporaries in an expression like e = a + b * c / d Because every te...
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How to grab substring before a specified character jQuery or JavaScript

...fore the ',' comma. How do I do this in JavaScript or jQuery? I tried this and not working.. 11 Answers ...
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How to get the current working directory in Java?

...The current directory is represented as system property, that is, user.dir and is the directory from where the JVM was invoked. share | improve this answer | follow ...
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Create a table without a header in Markdown

...ort tables without headers. That means the separation line for headers is mandatory. Parsers that do not support tables without headers multimarkdown Maruku: A popular implementation in Ruby byword: "All tables must begin with one or more rows of headers" PHP Markdown Extra "second line contains ...