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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...
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?
...
How does '20 seconds' work in Scala?
...
There are a few things going on.
First, Scala allows dots and parens to be omitted from many method calls, so 20 seconds is equivalent to 20.seconds()*.
Second, an "implicit conversion" is applied. Since 20 is an Int and Int has no seconds method, the compiler searches ...
How to create directories recursively in ruby?
...c/d.txt, but I do not know if any of these directories exist". My solution allows to use the existing file path ('/a/b/c/d.txt'), and, without separate parsing, create all the folders.
– Vadym Tyemirov
Oct 9 '19 at 4:47
...
Create instance of generic type in Java?
...get();
}
}
You would construct this class like this:
SomeContainer<String> stringContainer = new SomeContainer<>(String::new);
The syntax String::new on that line is a constructor reference.
If your constructor takes arguments you can use a lambda expression instead:
SomeContain...
How do I sort an array of hashes by a value in the hash?
...
Actually, Array#sort_by! is new in Ruby 1.9.2. Available today to all Ruby version by requiring my backports gem too :-)
– Marc-André Lafortune
Jul 1 '10 at 4:19
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How to read file from relative path in Java project? java.io.File cannot find the path specified
...
Error: > Illegal escape character in string literal.
– IgorGanapolsky
May 1 '15 at 16:58
...
Returning a value from thread?
... Program
{
static bool done = false;
static void Main(string[] args)
{
BackgroundWorker bg = new BackgroundWorker();
bg.DoWork += new DoWorkEventHandler(bg_DoWork);
bg.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bg_RunWork...
How to define a List bean in Spring?
...spring-util-2.5.xsd">
<util:list id="myList" value-type="java.lang.String">
<value>foo</value>
<value>bar</value>
</util:list>
The value-type is the generics type to be used, and is optional. You can also specify the list implementation class usin...
Is it possible in Java to access private fields via reflection [duplicate]
...a different class.
import java.lang.reflect.*;
class Other
{
private String str;
public void setStr(String value)
{
str = value;
}
}
class Test
{
public static void main(String[] args)
// Just for the ease of a throwaway test. Don't
// do this normally!...