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Is there a way to make GHC provide the type class constraints of typed holes?
...for ‘it’: it = show _h
• Relevant bindings include
it :: String (bound at <interactive>:7:1)
the type of the hole is defaulted to (). This is apparently the desired behavior, though there's an argument to be made that extended defaulting shouldn't apply to holes (as a commo...
Detect Safari browser
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Doesn't work. Currently outputting chrome UA string on iPhone and it doesn't even have the word "chrome" in it.
– Paul Carlton
Jul 1 '14 at 22:59
6
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iPhone Data Usage Tracking/Monitoring
... internet.
#include <net/if.h>
#include <ifaddrs.h>
static NSString *const DataCounterKeyWWANSent = @"WWANSent";
static NSString *const DataCounterKeyWWANReceived = @"WWANReceived";
static NSString *const DataCounterKeyWiFiSent = @"WiFiSent";
static NSString *const DataCounterKeyWiFiRe...
Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?
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Shouldn't both be get_author, since that is what the string you're returning (and the short description) actually reference? Or change string format argument to obj.book.reviews?
– Carl G
Jun 20 '12 at 19:12
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String.Empty versus “” [duplicate]
How is String.Empty different from "" ?
5 Answers
5
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ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged)
...nged.</param>
public ItemPropertyChangedEventArgs(int index, string name) : base(name)
{
CollectionIndex = index;
}
/// <summary>
/// Initializes a new instance of the <see cref="ItemPropertyChangedEventArgs"/> class.
///...
What does enumerable mean?
...re that it's within the object.
var obj = { key: 'val' };
console.log('toString' in obj); // true
console.log(typeof obj.toString); // "function"
for (var key in obj)
console.log(key); // "key"
A property is identified as enumerable or not by its own [[Enumerable]] attribute. You can view...
Python - Count elements in list [duplicate]
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just do len(MyList)
This also works for strings, tuples, dict objects.
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How to center a (background) image within a div?
... If you want the entire div to be filled with the image and no extra space you should use background-size: cover; If you want the entire image to show without any part of the image being cut off or stretched you want to use background-size: contain;
– Zlerp
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Cleaner way to do a null check in C#? [duplicate]
... return visitor.IsNull;
}
}
class Program
{
static void Main(string[] args)
{
Person nullPerson = null;
var isNull_0 = nullPerson.IsNull(p => p.contact.address.city);
var isNull_1 = new Person().IsNull(p => p.contact.address.city);
var isNull_2...