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AWS CloudFormation
User Guide (API Version 2010-05-15)

Use the optional Parameters section to customize your templates. Parameters enable you to input custom values to your template each time you create or update a stack.

Defining a Parameter in a Template

The following example declares a parameter named InstanceTypeParameter . This parameter lets you specify the Amazon EC2 instance type for the stack to use when you create or update the stack.

Note that InstanceTypeParameter has a default value of t2.micro . This is the value that AWS CloudFormation uses to provision the stack unless another value is provided.

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YAML

You use the Ref intrinsic function to reference a parameter, and AWS CloudFormation uses the parameter's value to provision the stack. You can reference parameters from the Resources and Outputs sections of the same template.

In the following example, the InstanceType property of the EC2 instance resource references the InstanceTypeParameter parameter value:

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YAML

The following requirements apply when using parameters:

You can have a maximum of 60 parameters in an AWS CloudFormation template.

Each parameter must be given a logical name (also called logical ID), which must be alphanumeric and unique among all logical names within the template.

Each parameter must be assigned a parameter type that is supported by AWS CloudFormation. For more information, see .

Each parameter must be assigned a value at runtime for AWS CloudFormation to successfully provision the stack. You can optionally specify a default value for AWS CloudFormation to use unless another value is provided.

Parameters must be declared and referenced from within the same template. You can reference parameters from the and sections of the template.

The Parameters section consists of the key name Parameters . For each parameter within the section, you must declare a logical name and type. You can optionally specify additional properties.

AWS CloudFormation supports the following parameter types: String , Number , List<Number> , CommaDelimitedList , an AWS-specific type, or an SSM Parameter type. For more information, see Type .

Important

For sensitive parameter values (such as passwords), set the property to . That way, whenever anyone describes your stack, the parameter value is shown as asterisks ().

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A regular expression that represents the patterns to allow for String types.

Android Developers

Every text field expects a certain type of text input, such as an email address, phone number, or just plain text. So it's important that you specify the input type for each text field in your app so the system displays the appropriate soft input method (such as an on-screen keyboard).

Beyond the type of buttons available with an input method, you should specify behaviors such as whether the input method provides spelling suggestions, capitalizes new sentences, and replaces the carriage return button with an action button such as a Done or Next . This lesson shows how to specify these characteristics.

Specify the keyboard type

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Figure 1. The input type.

For example, if you'd like an input method for entering a phone number, use the "phone" value:

Figure 2. The input type.

Or if the text field is for a password, use the "textPassword" value so the text field conceals the user's input:

There are several possible values documented with the China factory supplier child shoekids footwear cheap Purchase Cheap Online Manchester Great Sale For Sale Clearance Online Fake bEIuYLyDC
attribute and some of the values can be combined to specify the input method appearance and additional behaviors.

Figure 3. Adding provides auto-correction for misspellings.

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attribute allows you to specify various behaviors for the input method. Most importantly, if your text field is intended for basic text input (such as for a text message), you should enable auto spelling correction with the "textAutoCorrect" value.

You can combine different behaviors and input method styles with the android:inputType attribute. For example, here's how to create a text field that capitalizes the first word of a sentence and also auto-corrects misspellings:

Most soft input methods provide a user action button in the bottom corner that's appropriate for the current text field. By default, the system uses this button for either a Next or Done action unless your text field allows multi-line text (such as with android:inputType="textMultiLine" ), in which case the action button is a carriage return. However, you can specify additional actions that might be more appropriate for your text field, such as Send or Go .

To specify the keyboard action button, use the android:imeOptions attribute with an action value such as "actionSend" or "actionSearch" . For example:

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Lightness and darkness is what creates value in visual art. Value deals with how light reflects off of objects and how we see it. The more light, the higher the value. White is the highest or lightest value while black is the lowest or darkest value. Colors also have value, for example, yellow has a high value while blue has a low value. This is a very important element of design, especially in painting and drawing, to be able to create the illusion of light with contrast. Contrast is needed to understand two-dimensional artwork. Buy Cheap Sast Good Selling Cheap Price Swift Run Primeknit Trainers In Black CQ2889 Black adidas Originals 209mkZ

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