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Does assignment with a comma work?
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There's a lot going on here, but basically, it comes down to the comma operator.
The comma operator evaluates both of its operands (from left to right) and returns the value of the second operand.
This code:
aaa = 1,2,3
Is equivalent to:
aaa ...
Best practices for SQL varchar column length [closed]
Every time is set up a new SQL table or add a new varchar column to an existing table, I am wondering one thing: what is the best value for the length .
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Best way to select random rows PostgreSQL
...ditional info in the comments),
You have a numeric ID column (integer numbers) with only few (or moderately few) gaps.
Obviously no or few write operations.
Your ID column has to be indexed! A primary key serves nicely.
The query below does not need a sequential scan of the big table, only an in...
How to create Temp table with SELECT * INTO tempTable FROM CTE Query
I have a MS SQL CTE query from which I want to create a temporary table. I am not sure how to do it as it gives an Invalid Object name error.
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Quickest way to convert a base 10 number to any base in .NET?
I have and old(ish) C# method I wrote that takes a number and converts it to any base:
12 Answers
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Convert hex string to int
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It's simply too big for an int (which is 4 bytes and signed).
Use
Long.parseLong("AA0F245C", 16);
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Convert array of strings into a string in Java
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If you just want a "debug-style" dump of an array:
String str = Arrays.toString(arr);
or, for more control (before Java 8):
StringBuilder builder = new StringBuilder();
for(String s : arr) {
builder.append(s);
}
String str = builder.toStri...
What's the point of having pointers in Go?
I know that pointers in Go allow mutation of a function's arguments, but wouldn't it have been simpler if they adopted just references (with appropriate const or mutable qualifiers). Now we have pointers and for some built-in types like maps and channels implicit pass by reference.
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how to return index of a sorted list? [duplicate]
...mple, if the list I want to sort is [2,3,1,4,5] , I need [2,0,1,3,4] to be returned.
7 Answers
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How do you tell the Visual Studio project type from an existing Visual Studio project
...rms applications contain:
<OutputType>WinExe</OutputType>
Library (.dll) projects contain:
<OutputType>Library</OutputType>
and do NOT contain a
<ProjectTypeGuids>
ASP.NET and WCF projects contain:
<ProjectTypeGuids>{603c0e0b-db56-11dc-be95-000d561079b0...