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Binding a Button's visibility to a bool value in ViewModel
...pertyChanged.Raise(this, e);
}
protected void OnPropertyChanged(string propertyName)
{
OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
}
This is how they use Model-view-viewmodel
But since you want it binded to a boolean, You will need some converter....
How to parse Excel (XLS) file in Javascript/HTML5
...w_object_array(workbook.Sheets[sheetName]);
var json_object = JSON.stringify(XL_row_object);
console.log(json_object);
})
};
reader.onerror = function(ex) {
console.log(ex);
};
reader.readAsBinaryString(file);
};
};
</script>
Below post has t...
Does Typescript support the ?. operator? (And, what's it called?)
...e available, including the type conversions such as...
var n: number = +myString; // convert to number
var b: bool = !!myString; // convert to bool
Manual Solution
But back to the question. I have an obtuse example of how you can do a similar thing in JavaScript (and therefore TypeScript) althou...
How to do an instanceof check with Scala(Test)
...classTag[T].runtimeClass
MatchResult(
obj.getClass == cls,
obj.toString + " was not an instance of " + cls.toString,
obj.toString + " was an instance of " + cls.toString
)
}
def anInstanceOf[T:ClassTag] = BeMatcher { obj: Any =>
val cls = classTag[T].runtimeClass
MatchResult(...
Transpose a data frame
...ile the name column is in it - all numeric values will then be turned into strings!
Here's a solution that keeps numbers as numbers:
# first remember the names
n <- df.aree$name
# transpose all but the first column (name)
df.aree <- as.data.frame(t(df.aree[,-1]))
colnames(df.aree) <- n
d...
How to find available versions for a bower dependency
...ecific to a package. bower search prints all packages that has the query string as a substring.
– Yiling
Aug 29 '15 at 16:15
...
#1071 - Specified key was too long; max key length is 767 bytes
...
MySQL assumes worst case for the number of bytes per character in the string. For the MySQL 'utf8' encoding, that's 3 bytes per character since that encoding doesn't allow characters beyond U+FFFF. For the MySQL 'utf8mb4' encoding, it's 4 bytes per character, since that's what MySQL calls actua...
Is there a decorator to simply cache function return values?
...eState (with the cache size limit) pickles the arguments into a (hashable) string which is of course more expensive but more general.
– Nathan Kitchen
May 3 '09 at 5:43
...
Does Java have a HashMap with reverse lookup?
...ange the state of the map also, in one direction the keys are instructions strings the other binary values. So you should never have conflicts.
– M.K
Dec 21 '13 at 19:28
...
Use JNI instead of JNA to call native code?
...o Java using standard Java syntax. For example, here's how you'd print a C string to the Java standard output:
native "C++" void printHello() {
const char* helloWorld = "Hello, World!";
`System.out.println(#$(helloWorld));`
}
JANET then translates the backtick-embedded Java into the appro...