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How to display default text “--Select Team --” in combo box on pageload in WPF?
...
You can do this without any code behind by using a IValueConverter.
<Grid>
<ComboBox
x:Name="comboBox1"
ItemsSource="{Binding MyItemSource}" />
<TextBlock
Visibility="{Binding SelectedItem, ElementName=comboBox1, Converter={StaticResource...
How do I convert an HttpRequestBase into an HttpRequest object?
...typemock or some other magic).
Simply use the HttpRequestWrapper class to convert as shown below.
var httpRequestBase = new HttpRequestWrapper(Context.Request);
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Converting an array of objects to ActiveRecord::Relation
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How can I convert an Array of objects to an ActiveRecord::Relation? Preferably without doing a where each time.
You cannot convert an Array to an ActiveRecord::Relation since a Relation is just a builder for a SQL query and its metho...
WPF: Setting the Width (and Height) as a Percentage Value
... I already tried that, but I'm getting this error: '2*' string cannot be converted to Length.'
– Andreas Grech
Apr 4 '09 at 16:06
6
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How to create abstract properties in python abstract classes
...ased on James answer above
def compatibleabstractproperty(func):
if sys.version_info > (3, 3):
return property(abstractmethod(func))
else:
return abstractproperty(func)
and use it as a decorator
@compatibleabstractproperty
def env(self):
raise NotImp...
How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators dif
...ways have to look at the context to see what, where and why something gets converted to understand what is going on.
Converting rules
Converting to boolean
Converting to integer
Converting to float
Converting to string
Converting to array
Converting to object
Converting to resource
Converting to ...
How do I check if a string is a number (float)?
...want is_number to return FALSE for 'NaN' this code will not work as Python converts it to its representation of a number that is not a number (talk about identity issues):
>>> float('NaN')
nan
Otherwise, I should actually thank you for the piece of code I now use extensively. :)
G.
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Converting an object to a string
How can I convert a JavaScript object into a string?
36 Answers
36
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Convert column classes in data.table
I have a problem using data.table: How do I convert column classes? Here is a simple example: With data.frame I don't have a problem converting it, with data.table I just don't know how:
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App Inventor 2 数学代码块 · App Inventor 2 中文网
...(acos)
反正切 (atan)
反正切2 (atan2)
将弧度转换为度数 (convert radians to degrees)
将度数转换为弧度 (convert degrees to radians)
数字转变为小数形式 (format as a decimal)
是否为数字 (is a number)
进制转换 (convert number)
按位与 (bitwise and)...