How to check if a value is a double value in Android (Java)

August 4, 2016

To check if a value is a double value in Android you can use the snippet below.

Samples

Java (Android) Sample

public static boolean IsDoubleValue(String input) {
	if(!TextUtils.isEmpty(input.trim())) { //use <em>if(!input.trim().toString().equals("")) {</em> if you are not on the Android platform
		String regExp = "[\\x00-\\x20]*[+-]?(((((\\p{Digit}+)(\\.)?((\\p{Digit}+)?)([eE][+-]?(\\p{Digit}+))?)|(\\.((\\p{Digit}+))([eE][+-]?(\\p{Digit}+))?)|(((0[xX](\\p{XDigit}+)(\\.)?)|(0[xX](\\p{XDigit}+)?(\\.)(\\p{XDigit}+)))[pP][+-]?(\\p{Digit}+)))[fFdD]?))[\\x00-\\x20]*";
		return input.matches(regExp);
	}else{
		return false;
	}
}

public static boolean IsDoubleValue(String input) {

if(!TextUtils.isEmpty(input.trim())) { //use <em>if(!input.trim().toString().equals("")) {</em> if you are not on the Android platform

String regExp = "[\\x00-\\x20]*[+-]?(((((\\p{Digit}+)(\\.)?((\\p{Digit}+)?)([eE][+-]?(\\p{Digit}+))?)|(\\.((\\p{Digit}+))([eE][+-]?(\\p{Digit}+))?)|(((0[xX](\\p{XDigit}+)(\\.)?)|(0[xX](\\p{XDigit}+)?(\\.)(\\p{XDigit}+)))[pP][+-]?(\\p{Digit}+)))[fFdD]?))[\\x00-\\x20]*";

return input.matches(regExp);

}else{

return false;

}

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IsSmallerThan generic extension method for C# and VB.NET

Administrator

June 29, 2015

0 Comments

This is the IsSmallerThan generic extension method, this extension method which is part of the Fesslersoft.Extensions. It should only work with numeric values.

Samples

Sample C#

public static bool IsSmallerThan<TOne, TTwo>(this TOne baseValue, TTwo checkValue) where TOne : struct,IComparable, IComparable<TOne>, IConvertible, IEquatable<TOne>, IFormattable
																				   where TTwo : struct,IComparable, IComparable<TTwo>, IConvertible, IEquatable<TTwo>, IFormattable
{
	return Convert.ToDouble(baseValue) < Convert.ToDouble(checkValue);
}

public static bool IsSmallerThan<TOne, TTwo>(this TOne baseValue, TTwo checkValue) where TOne : struct,IComparable, IComparable<TOne>, IConvertible, IEquatable<TOne>, IFormattable

where TTwo : struct,IComparable, IComparable<TTwo>, IConvertible, IEquatable<TTwo>, IFormattable

{

return Convert.ToDouble(baseValue) < Convert.ToDouble(checkValue);

}

Sample VB.NET

<System.Runtime.CompilerServices.Extension> _
Public Shared Function IsSmallerThan(Of TOne As {Structure, IComparable, IComparable(Of TOne), IConvertible, IEquatable(Of TOne), IFormattable}, TTwo As {Structure, IComparable, IComparable(Of TTwo), IConvertible, IEquatable(Of TTwo), IFormattable})(baseValue As TOne, checkValue As TTwo) As Boolean
	Return Convert.ToDouble(baseValue) < Convert.ToDouble(checkValue)
End Function

<System.Runtime.CompilerServices.Extension> _

Public Shared Function IsSmallerThan(Of TOne As {Structure, IComparable, IComparable(Of TOne), IConvertible, IEquatable(Of TOne), IFormattable}, TTwo As {Structure, IComparable, IComparable(Of TTwo), IConvertible, IEquatable(Of TTwo), IFormattable})(baseValue As TOne, checkValue As TTwo) As Boolean

Return Convert.ToDouble(baseValue) < Convert.ToDouble(checkValue)

End Function

If you have any questions or suggestions feel free to rate this snippet, post a comment or Contact Us via Email.

Related links:

IsLargerThan generic extension method for C# and VB.NET

Administrator

June 29, 2015

0 Comments

This is the IsLargerThan generic extension method, this extension method which is part of the Fesslersoft.Extensions. It should only work with numeric values.

Samples

Sample C#

public static bool IsLargerThan<TOne, TTwo>(this TOne baseValue, TTwo checkValue) where TOne : struct,IComparable,IComparable<TOne>,IConvertible,IEquatable<TOne>,IFormattable
																				  where TTwo : struct,IComparable,IComparable<TTwo>,IConvertible,IEquatable<TTwo>,IFormattable
{
	return Convert.ToDouble(baseValue) > Convert.ToDouble(checkValue);
}

public static bool IsLargerThan<TOne, TTwo>(this TOne baseValue, TTwo checkValue) where TOne : struct,IComparable,IComparable<TOne>,IConvertible,IEquatable<TOne>,IFormattable

where TTwo : struct,IComparable,IComparable<TTwo>,IConvertible,IEquatable<TTwo>,IFormattable

{

return Convert.ToDouble(baseValue) > Convert.ToDouble(checkValue);

}

Sample VB.NET

<System.Runtime.CompilerServices.Extension> _
Public Shared Function IsLargerThan(Of TOne As {Structure, IComparable, IComparable(Of TOne), IConvertible, IEquatable(Of TOne), IFormattable}, TTwo As {Structure, IComparable, IComparable(Of TTwo), IConvertible, IEquatable(Of TTwo), IFormattable})(baseValue As TOne, checkValue As TTwo) As Boolean
	Return Convert.ToDouble(baseValue) > Convert.ToDouble(checkValue)
End Function

<System.Runtime.CompilerServices.Extension> _

Public Shared Function IsLargerThan(Of TOne As {Structure, IComparable, IComparable(Of TOne), IConvertible, IEquatable(Of TOne), IFormattable}, TTwo As {Structure, IComparable, IComparable(Of TTwo), IConvertible, IEquatable(Of TTwo), IFormattable})(baseValue As TOne, checkValue As TTwo) As Boolean

Return Convert.ToDouble(baseValue) > Convert.ToDouble(checkValue)

End Function

If you have any questions or suggestions feel free to rate this snippet, post a comment or Contact Us via Email.

Related links:

How to check if a variable exists in Python

Administrator

February 21, 2015

4 Comments

To check if a variable exists in Python, you can use the snippet below.

Sample Python

if 'myVariable' in locals(): # myVariable exists locally.
if 'myVariable' in globals(): # myVariable exists globally.

How to get the Month name of a Datetime in C# and VB.NET

Administrator

February 20, 2015

3 Comments

To get the Month name of a Datetime in C# and VB.NET you can use the following snippet.

Sample C#

Console.WriteLine(new DateTime(2010, 1, 1).ToString("MMM", CultureInfo.InvariantCulture)); //Jan
Console.WriteLine(new DateTime(2010, 1, 1).ToString("MMMM", CultureInfo.InvariantCulture)); //January

Sample VB.NET

Console.WriteLine(New DateTime(2010, 1, 1).ToString("MMM", CultureInfo.InvariantCulture))
'Jan
Console.WriteLine(New DateTime(2010, 1, 1).ToString("MMMM", CultureInfo.InvariantCulture))
'January

IsNull extension method for C# and VB.NET

Administrator

February 19, 2015

3 Comments

You can use the IsNull Extension method by using the snippet below.

Sample C#

public static bool IsNull(this object source)
{
     return source == null;
}

Sample VB.NET

<System.Runtime.CompilerServices.Extension> _
Public Shared Function IsNull(source As Object) As Boolean
	Return source Is Nothing
End Function

As always, this extension method has been added to the Github Fesslersoft.Extensions Repository

How to check if a number is a power of 2 in C# and VB.NET

Administrator

February 19, 2015

3 Comments

To check if a number is a power of 2 in C# and VB.NET you can use the following extension method.

Sample C#

public static bool IsPowerOfTwo(this ulong input)
{
    return (input != 0) && ((input & (input - 1)) == 0);
}

Sample VB.NET

<System.Runtime.CompilerServices.Extension> _
Public Shared Function IsPowerOfTwo(input As ULong) As Boolean
	Return (input <> 0) AndAlso ((input And (input - 1)) = 0)
End Function

As always, the extension method was added to out Fesslersoft.Extensions library @Github

How to get the path of the active app.config file in C# and VB.NET

Administrator

February 19, 2015

3 Comments

To get the path of the active app.config file in C# and VB.NET you can use the following snippet

Sample C#

AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;

Sample VB.NET

AppDomain.CurrentDomain.SetupInformation.ConfigurationFile

How to check if a character is Uppercase in C# and VB.NET

Administrator

February 17, 2015

2 Comments

To check if a character is Uppercase in C# and VB.NET you can use the following Extension Method

Sample C#

/// <summary>
///     Checks whether the character is an uppercase Character or not
/// </summary>
/// <param name="inputChar"></param>
/// <returns>True or False depending on the character</returns>
public static bool IsUpperCase(this char inputChar)
{
	return inputChar >= 'A' && inputChar <= 'Z';
}

Sample VB.NET

''' <summary>
'''     Checks whether the character is an uppercase Character or not
''' </summary>
''' <param name="inputChar"></param>
''' <returns>True or False depending on the character</returns>
<System.Runtime.CompilerServices.Extension> _
Public Shared Function IsUpperCase(inputChar As Char) As Boolean
	Return inputChar >= "A"C AndAlso inputChar <= "Z"C
End Function

How to check if String is Null or Empty in XSL

Administrator

February 17, 2015

3 Comments

To check if String is Null or Empty in XSL you can use the following snippet.

Sample XSL

<xsl:choose>
    <xsl:when test="fieldToTest != ''">
        <xsl:value-of select="Field1Value" />
    </xsl:when>
    <xsl:otherwise>
        <xsl:value-of select="Field2Value" />
    </xsl:otherwise>
</xsl:choose>

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evaluate

How to check if a value is a double value in Android (Java)

Samples

Java (Android) Sample

IsSmallerThan generic extension method for C# and VB.NET

Samples

Sample C#

Sample VB.NET

IsLargerThan generic extension method for C# and VB.NET

Samples

Sample C#

Sample VB.NET

How to check if a variable exists in Python

Sample Python

How to get the Month name of a Datetime in C# and VB.NET

Sample C#

Sample VB.NET

IsNull extension method for C# and VB.NET

Sample C#

Sample VB.NET

How to check if a number is a power of 2 in C# and VB.NET

Sample C#

Sample VB.NET

How to get the path of the active app.config file in C# and VB.NET

Sample C#

Sample VB.NET

How to check if a character is Uppercase in C# and VB.NET

Sample C#

Sample VB.NET

How to check if String is Null or Empty in XSL

Sample XSL