    (char)myint;

for example:

    Console.WriteLine(&quot;(char)122 is {0}&quot;, (char)122);

yields:

&gt; (char)122 is z



    int i = 65;
    char c = Convert.ToChar(i);

Although not exactly answering the question as formulated, but if you need or can take the end result as string you can also use

    string s = Char.ConvertFromUtf32(56);

which will give you surrogate UTF-16 pairs if needed, protecting you if you are out side of the [BMP][1].


  [1]: http://en.wikipedia.org/wiki/Basic_Multilingual_Plane

gimel&#39;s answer in PowerShell seems to be:

    &gt; [char]65
    A
    &gt; [char]48
    0
    &gt; [char]97
    a

I have a single user java program that I would like to have store data in a light weight database such as Derby or Sqlite. I would like to use a data abstraction layer in my program. Hibernate appears to require a lot of configuration and is overkill for what I need. What are light weight alternatives to Hibernate?

Light weight alternative to Hibernate?

I&#39;m currently working on some logging code that supposed to - among other things - print information about the calling function. This should be relatively easy, standard C++ has a `type_info` class. This contains the name of the typeid&#39;d class/function/etc. but it&#39;s mangled. It&#39;s not very useful. I.e. `typeid(std::vector&lt;int&gt;).name()` returns `St6vectorIiSaIiEE`.

Is there a way to produce something useful from this? Like `std::vector&lt;int&gt;` for the above example. If it only works for non-template classes, that&#39;s fine too.

The solution should work for gcc, but it would be better if I could port it. It&#39;s for logging so it&#39;s not so important that it can&#39;t be turned off, but it should be helpful for debugging.

Unmangling the result of std::type_info::name

What is the best way to convert an Int value to the corresponding Char in Utf16, given that the Int is in the range of valid values?

Int to Char in C#

<p>What is the best way to convert an Int value to the corresponding Char in Utf16, given that the Int is in the range of valid values?</p>


I just came over this syntax in some of the questions in this forum, but Google and any other searchengine tends to block out anything but letters and number in the search so it is impossible to search out &quot;=&gt;&quot;.

So can anyone tell me what it is and how it is used? 


What does the &#39;=&gt;&#39; syntax in C# mean?

What is the equivalent of Java&#39;s `System.currentTimeMillis()` in C#?

Java System.currentTimeMillis() equivalent in C#

How can I validate a username and password against Active Directory? I simply want to check if a username and password are correct.


Validate a username and password against Active Directory?

My stored procedure has an output parameter:

    @ID INT OUT

How can I retrieve this using ado.net?

    using (SqlConnection conn = new SqlConnection(...))
    {
        SqlCommand cmd = new SqlCommand(&quot;sproc&quot;, conn);
        cmd.CommandType = CommandType.StoredProcedure;

        // add parameters
               
        conn.Open();

        // *** read output parameter here, how?
        conn.Close();
    }

Get output parameter value in ADO.NET

Is there a simple attribute or data contract that I can assign to a function parameter that prevents `null` from being passed in C#/.NET?  Ideally this would also check at compile time to make sure the literal `null` isn&#39;t being used anywhere for it and at run-time throw `ArgumentNullException`.

Currently I write something like ...

    if (null == arg)
      throw new ArgumentNullException(&quot;arg&quot;);

... for every argument that I expect to not be `null`.

On the same note, is there an opposite to `Nullable&lt;&gt;` whereby the following would fail:

    NonNullable&lt;string&gt; s = null; // throw some kind of exception


Mark parameters as NOT nullable in C#/.NET?

What are the proper uses of:

 - `static_cast`
 - `dynamic_cast`
 - `const_cast`
 - `reinterpret_cast`
 - C-style cast `(type)value`
 - Function-style cast `type(value)`

How does one decide which to use in which specific cases?

When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?

What is the best possible way to check if a string can be represented as a number in Python? 

The function I currently have right now is:

    def is_number(s):
        try:
            float(s)
            return True
        except ValueError:
            return False

Which, not only is ugly and slow, but also seems clunky. However, I haven&#39;t found a better method because calling `float()` in the main function is even worse. 

How do I check if a string is a number (float)?

I can&#39;t find much information on `const_cast`.  The only info I could find (on Stack Overflow) is:

&gt; The `const_cast&lt;&gt;()` is used to add/remove const(ness) (or volatile-ness) of a variable.

This makes me nervous.  Could using a `const_cast` cause unexpected behavior?  If so, what?

Alternatively, when is it okay to use `const_cast`?

Is const_cast safe?

In SQL server 2005 this query

    select len(cast(&#39;the quick brown fox jumped over the lazy dog&#39; as varchar))
returns 30 as length while the supplied string has more characters. This seems to be the default. Why 30, and not 32 or any other power of 2?

**[EDIT]** I am aware that I should always specifiy the length when casting to varchar but this was a quick let&#39;s-check-something query. Questions remains, why 30?

Why is 30 the default length for VARCHAR when using CAST?

Upcasting is allowed in Java, however downcasting gives a compile error. 

The compile error can be removed by adding a cast but would anyway break at the runtime. 

In this case why Java allows downcasting if it cannot be executed at the runtime?  
Is there any practical use for this concept? 

    public class demo {
      public static void main(String a[]) {
          B b = (B) new A(); // compiles with the cast, 
                             // but runtime exception - java.lang.ClassCastException
      }
    }

    class A {
      public void draw() {
        System.out.println(&quot;1&quot;);
      }

      public void draw1() {
        System.out.println(&quot;2&quot;);
      }
    }

    class B extends A {
      public void draw() {
        System.out.println(&quot;3&quot;);
      }
      public void draw2() {
        System.out.println(&quot;4&quot;);
      }
    }

Content Type	Original Author	Original Content on Stackoverflow
Question	Boaz	View Question on Stackoverflow
Solution 1 - C#	gimel	View Answer on Stackoverflow
Solution 2 - C#	Corey Trager	View Answer on Stackoverflow
Solution 3 - C#	Boaz	View Answer on Stackoverflow
Solution 4 - C#	JohnL4	View Answer on Stackoverflow

Int to Char in C#

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Solution 4 - C#

Unmangling the result of std::type_info::name

Light weight alternative to Hibernate?

Attributions