converter

Currently there seem to be two ways to do presentations in R: RStudio presentations , with .Rpres extension rmarkdown , with .Rmd extension To me, it looks like the latter is slightly more powerful. The input format is very similar, yet not identical. I'm thinking about converting an RStudio presentation to rmarkdown. What's the best way to do this? How about the conversion back? On that note, I'd really like to see an "in-pane" preview for rmarkdown presentations in RStudio, just like for RStudio presentations. I wonder why this isn't implemented -- the preview forcibly shows up in a modal

I have a script that calls a function that takes a hexadecimal number for an argument. The argument needs to the 0x prefix. The data source is a database table and is stored as a string, so it is returned '0x77'. I am looking for a way to take the string from the database and use it as an argument in hex form with the 0x prefix. This works: addr = 0x77 value = class.function(addr) The database entry has to be a string, as most of the other records do not have hexadecimal values in this column, but the values could be changed to make it easier, so instead of '0x77', it could be '119'. Your

This question already has an answer here: Parse JSON in JavaScript? [duplicate] 16 answers I have a string like : $scope.text = '"{\"firstName\":\"John\",\"age\":454 }"'; and I want to convert to js object: $scope.tmp = {"firstName":"John","age":454 }; Note: JSON.parse() doesn't work!! It's my sample in codepen You can do it with angular.fromJson() in your sample, it would have been $scope.tmp = angular.fromJson($scope.text); The difference between JSON.Parse() and angular.fromJson , is that angular will check to make sure a string is provided. If it is already an object, it will return the

I want to set the width of a TextBlock based on the width of its container, minus the margins set on the TextBlock. Here is my code <TextBlock x:Name="txtStatusMessages" Width="{Binding ElementName=LayoutRoot,Path=ActualWidth }" TextWrapping="WrapWithOverflow" Foreground="White" Margin="5,5,5,5">This is a message </TextBlock> And that works great except for the fact that the TextBlock is 10 units too big due to the Left and Right Margins bbeing set to 5. OK, so I thought... Let's use a Converter. But I don't know how to pass the ActualWidth of my container control (SEE ABOVE: LayoutRoot). I

I'm taking a value from a textbox and converting it to decimal. But, the textbox value could be empty. So, how could I handle empty strings from the textbox? Unfortunately I have around 50 textboxes to deal with, so answers like 'check for null with IF condition' won't help me. My code will look ugly if I use all those IF conditions. I have this Convert.ToDecimal(txtSample.Text) To handle nulls, I did this Convert.ToDecimal(txtSample.Text = string.IsNullOrEmpty(txtSample.Text) ? "0" : txtSample.Text) But, the above code is displaying '0' in the textbox. User does not want to see '0'. Another

I have a converter that in code I can set a property like: tabAssumptions.SetBinding(UIElement.VisibilityProperty, new Binding("CurrentPhase.IsWholeScheme") { Converter = new BoolToVisibilityConverter { Inverse = true } }); How can I set the Inverse property of the converter when used in XAML? Phil My BoolToVisibilityConverter is below. You can either use it as a resource: <converters:BoolToVisibilityConverter x:Key="FalseToHidden" TrueValue="Visible" FalseValue="Hidden" /> or use it as a MarkupExtension inline in your XAML: Visibility="{Binding MyFlag, Converter={vc:BoolToVisibilityConverter

This question already has an answer here: How to inject @EJB, @PersistenceContext, @Inject, @Autowired, etc in @FacesConverter? 5 answers This converter is called from my JSF. I already register it inside faces-config.xml public class ProjectConverter implements Converter{ @EJB DocumentSBean sBean; @ManagedProperty(value="#{logging}") private Logging log; public ProjectConverter(){ } public Object getAsObject(FacesContext context, UIComponent component, String value) { if(value.trim().equals("")){ return null; } return sBean.getProjectById(value); } public String getAsString(FacesContext

I im trying to set the SystemColors.HighlightBrushKey always a bit darker than the Background of the selected Row. Therefore im using this Code: App.xaml: <WPFTests2:SelectionBackgroundConverter x:Key="SelectionBackgroundConverter"/> <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="{Binding Background, Converter={StaticResource SelectionBackgroundConverter}}"/> </Application.Resources> Window1.xaml: <Window x:Class="WPFTests2.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1"