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Double Negation in C++
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It's a trick to convert to bool.
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Why doesn't print work in a lambda?
... where I am using this for simple stubbing out I use this:
fn = lambda x: sys.stdout.write(str(x) + "\n")
which works perfectly.
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PadLeft function in T-SQL
... trick.
If your id or column is in a varchar and represents a number you convert first:
SELECT FORMAT(CONVERT(INT,id), '0000') FROM TableA
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When to use reinterpret_cast?
...you will know.
Full answer:
Let's consider basic number types.
When you convert for example int(12) to unsigned float (12.0f) your processor needs to invoke some calculations as both numbers has different bit representation. This is what static_cast stands for.
On the other hand, when you call r...
Get string character by index - Java
...rns s
If you're hellbent on having a string there are a couple of ways to convert a char to a string:
String mychar = Character.toString("mystring".charAt(2));
Or
String mychar = ""+"mystring".charAt(2);
Or even
String mychar = String.valueOf("mystring".charAt(2));
For example.
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How do I get list of all tables in a database using TSQL?
...ql, use: TABLE_SCHEMA='dbName' )
PS: For SQL Server 2000:
SELECT * FROM sysobjects WHERE xtype='U'
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Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
...e beginner coming here, reading this, and going away thinking that you can convert any character from upper case to lower case by multiplying it by 1.5.
– Dawood ibn Kareem
May 28 '14 at 9:25
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How to drop a table if it exists?
... @ZvonimirTokic it means "User defined Table". "IT" would be an internal, system defined, table. A full list is here msdn.microsoft.com/en-us/library/ms190324.aspx
– Martin Smith
Feb 7 '16 at 9:59
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How can I create a UIColor from a hex string?
... This is great except it doesn't do what the questioner asks, which is to convert a hex STRING into a UIColor. This converts an integer to a UIColor.
– darrinm
Sep 12 '12 at 22:44
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How to TryParse for Enum value?
...rts enum marked with the Flags attribute.
/// <summary>
/// Converts the string representation of an enum to its Enum equivalent value. A return value indicates whether the operation succeeded.
/// This method does not rely on Enum.Parse and therefore will never raise any first or...