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Why is typeof null “object”?
...hat the five types of primitives are: undefined, null, boolean, number and string.
8 Answers
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Carriage Return/Line Feed in .Net Resource File (App_GlobalResources)
...In the resource editor (where you can specify the name of the resource and string content) put the string content separated by Shift+Enter.
Lets say you want to type in
hello
world
Type "hello" followed by Shift+Enter and "world".
If you look at the Resources.Resx file (which is an xml fil...
Regular vs Context Free Grammars
...re's an analogous pumping lemma for context-free languages that breaks the strings in the language into five parts, uvxyz, and where all instances of the language are in uvixyiz, for i ≥ 0. Now, you have two "nonterminals" that can be replicated, or pumped, as long as you have the same number.
...
Best way to work with dates in Android SQLite [closed]
...HH:mm:ss) will then allow sorting by the date column.
Retrieving dates as strings from SQLite you can then format/convert them as required into local regionalised formats using the Calendar or the android.text.format.DateUtils.formatDateTime method.
Here's a regionalised formatter method I use;
p...
Converting a Date object to a calendar object [duplicate]
...er = new SimpleDateFormat("yyyyMMdd");
date = (Date)formatter.parse(date.toString());
DateFormat is used to convert Strings to Dates (parse()) or Dates to Strings (format()). You are using it to parse the String representation of a Date back to a Date. This can't be right, can it?
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GetType() can lie?
...ceFoo();
Console.WriteLine("BadFoo says he's a '{0}'", badFoo.GetType().ToString());
Console.WriteLine("NiceFoo says he's a '{0}'", niceFoo.GetType().ToString());
Console.WriteLine("BadFoo really is a '{0}'", typeof(BadFoo));
Console.WriteLine("NiceFoo really is a '{0}'", typeof(NiceFoo));
Console...
right click context menu for datagridview
...ntMouseOverRow >= 0)
{
m.MenuItems.Add(new MenuItem(string.Format("Do something to row {0}", currentMouseOverRow.ToString())));
}
m.Show(dataGridView1, new Point(e.X, e.Y));
}
}
...
Is there any advantage of using map over unordered_map in case of trivial keys?
...(1) vs. O(log n) ). Most times I use a map, I use either int or std::string as the key type; hence, I've got no problems with the definition of the hash function. The more I thought about it, the more I came to realize that I can't find any reason of using a std::map over a std::unordered_...
Can my enums have friendly names? [duplicate]
... easy to get the description for a given value of the enum:
public static string GetDescription(this Enum value)
{
Type type = value.GetType();
string name = Enum.GetName(type, value);
if (name != null)
{
FieldInfo field = type.GetField(name);
if (field != null)
...
Python ValueError: too many values to unpack [duplicate]
...s is a dict and by default you are iterating over just the keys (which are strings).
Since self.materials has more than two keys*, they can't be unpacked into the tuple "k, m", hence the ValueError exception is raised.
In Python 2.x, to iterate over the keys and the values (the tuple "k, m"), we u...