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How to use Swift @autoclosure
...: () -> Bool) {
if pred() {
print("It's true")
}
}
To call this function, we have to pass in a closure
f(pred: {2 > 1})
// "It's true"
If we omit the braces, we are passing in an expression and that's an error:
f(pred: 2 > 1)
// error: '>' produces 'Bool', not the e...
How does the getView() method work when creating your own custom adapter?
...l be displayed. To
generate View for item 11, the getView() method will be called, and
convertView here is the view of item 1 (which is not neccessary
anymore). So instead create a new View object for item 11 (which is
costly), why not re-use convertView? => we just check convertView is
null or n...
Pandas get topmost n records within each group
...ll/5510 was just merged in; will be in 0.13, new method to do exactly this called cumcount (number the records in each group)
– Jeff
Nov 19 '13 at 11:10
1
...
Good PHP ORM Library?
...duct_id)
);
/* PHP */
// Create
$product=new Axon('products'); // Automatically reads the above schema
$product->product_id=123;
$product->description='Sofa bed';
$product->save(); // ORM knows it's a new record
// Retrieve
$product->load('product_id=123');
echo $product->descriptio...
Logical operator in a handlebars.js {{#if}} conditional
...n options.fn(this);
}
return options.inverse(this);
});
You can then call the helper in the template like this
{{#ifCond v1 v2}}
{{v1}} is equal to {{v2}}
{{else}}
{{v1}} is not equal to {{v2}}
{{/ifCond}}
sh...
How to return a value from a Form in C#?
I have a main form (let's call it frmHireQuote) that is a child of a main MDI form (frmMainMDI), that shows another form (frmImportContact) via ShowDialog() when a button is clicked.
...
Proper use of 'yield return'
...return ProduceExpensiveConsumable(); // expensive
}
Without yield, the call to ProduceList() might take a long time because you have to complete the list before returning:
//pseudo-assembly
Produce consumable[0] // expensive operation, e.g. disk I/O
Produce consumable[1] ...
How can I easily convert DataReader to List? [duplicate]
...T is return type(ClassName) and dr is parameter to mapping DataReader
C#, Call mapping method like the following:
List<Person> personList = new List<Person>();
personList = DataReaderMapToList<Person>(dataReaderForPerson);
This is the mapping method:
public static List<T>...
Display back button on action bar
... in the AndroidManifest.xml the parent activity (the activity that will be called once the back button in the action bar is pressed):
In your <activity> definition on the Manifest, add the line:
android:parentActivityName="com.example.activities.MyParentActivity"
...
How to use z-index in svg elements?
...want them painted, especially if the objects are being generated programatically and may appear nested (e.g. it appears g can't contain a,b, such that a is below g sibling c but b is above it)
– Michael
Sep 29 '15 at 1:24
...