    int i = 0;
    bool b = Convert.ToBoolean(i);

I assume `0` means `false` (which is the case in a lot of programming languages). That means `true` is `not 0` (some languages use `-1` some others use `1`; doesn&#39;t hurt to be compatible to either). So assuming by &quot;better&quot; you mean less typing, you can just write:

    bool boolValue = intValue != 0;

Joking aside, if you&#39;re only expecting your input integer to be a zero or a one, you should really be checking that this is the case.

    int yourInteger = whatever;
    bool yourBool;
    switch (yourInteger)
    {
        case 0: yourBool = false; break;
        case 1: yourBool = true;  break;
        default:
            throw new InvalidOperationException(&quot;Integer value is not valid&quot;);
    }

The out-of-the-box `Convert` won&#39;t check this; nor will `yourInteger (==|!=) (0|1)`.

I think this is easiest way:
```
int i=0;
bool b=i==1;
```

I am using **osx 10.8.2** installed **ruby 2.0** and....
 got this when trying to run **&quot;sudo gem install rails&quot;**

    $ sudo gem install rails
    ERROR:  Loading command: install (LoadError)
    	cannot load such file -- openssl
    ERROR:  While executing gem ... (NoMethodError)
        undefined method `invoke_with_build_args&#39; for nil:NilClass

I had ruby 1.9.x and rails 3.2.x working alright before

ruby 2.0 rails gem install error &quot;cannot load such file -- openssl&quot;

Hello I&#39;m creating an API using REST and Laravel following [this][1] article.

Everything works well as expected.

Now, I want to map a GET request to recognise a variable using &quot;?&quot;.

For example: `domain/api/v1/todos?start=1&amp;limit=2`.

Below is the contents of my `routes.php` : 

    Route::any(&#39;api/v1/todos/(:num?)&#39;, array(
        &#39;as&#39;   =&gt; &#39;api.todos&#39;,
        &#39;uses&#39; =&gt; &#39;api.todos@index&#39;
    ));

My `controllers/api/todos.php` :

    class Api_Todos_Controller extends Base_Controller {

		public $restful = true;

		public function get_index($id = null) {
			if(is_null($id)) {
				return Response::eloquent(Todo::all(1));

			} else {
				$todo = Todo::find($id);
				if (is_null($todo)) {
					return Response::json(&#39;Todo not found&#39;, 404);
				} else {
					return Response::eloquent($todo);	
				}
			}
		}
    }

How do I GET a parameter using &quot;?&quot; ?

  [1]: http://maxoffsky.com/code-blog/building-restful-api-in-laravel-start-here/

Getting GET &quot;?&quot; Variable in Laravel

The input `int` value only consist out of 1 or 0.
I can solve the problem by writing a `if else` statement.

Isn&#39;t there a way to cast the `int` into a `boolean`?

Better way to convert an int to a boolean

<p>The input <code>int</code> value only consist out of 1 or 0.
I can solve the problem by writing a <code>if else</code> statement.</p>
<p>Isn't there a way to cast the <code>int</code> into a <code>boolean</code>?</p>


Could anyone please tell how to pass dynamic values using Url.action().

Something Like,


    var firstname=&quot;abc&quot;;
    var username = &quot;abcd&quot;;
    location.href = &#39;@Html.Raw(@Url.Action(&quot;Display&quot;, &quot;Customer&quot;, new { uname = firstname ,name = username}))&#39;;


firstname, username is not getting reffered inside the Url.action() method.

How to pass these dynamic values using Url.action()?

Passing dynamic javascript values using Url.action()

I have a collection of DLLs(say 20). How do I find out all the DLLs on which one specific DLL (say DLL A) is depending upon?

Find out dependencies of all DLLs?

I have a REST service that reads a file and sends it to another console application after converting it to Byte array and then to Base64 string. This part works, but when the same stream is received at the application, it gets manipulated and is no longer a valid Base64 string. Some junk characters are getting introduced into the stream.

The exception received when converting the stream back to Byte is 

&gt; The input is not a valid Base-64 string as it contains a non-base 64
&gt; character, more than two padding characters, or a non-white space
&gt; character among the padding characters


**At Service:**

    [WebGet(UriTemplate = &quot;ReadFile/Convert&quot;, ResponseFormat = WebMessageFormat.Json)]  
    public string ExportToExcel()
      {
          string filetoexport = &quot;D:\\SomeFile.xls&quot;;
          byte[] data = File.ReadAllBytes(filetoexport);
          var s = Convert.ToBase64String(data);
          return s;
      }

**At Application:**

           var client = new RestClient(&quot;http://localhost:56877/User/&quot;);
           var request = new RestRequest(&quot;ReadFile/Convert&quot;, RestSharp.Method.GET);
           request.AddHeader(&quot;Accept&quot;, &quot;application/Json&quot;);
           request.AddHeader(&quot;Content-Type&quot;, &quot;application/Json&quot;);
           request.OnBeforeDeserialization = resp =&gt; {resp.ContentType =    &quot;application/Json&quot;;};
           var result = client.Execute(request);
           byte[] d = Convert.FromBase64String(result.Content); 


The input is not a valid Base-64 string as it contains a non-base 64 character

My question is **not** about floating precision. It is about why `Equals()` is different from `==`.

I understand why `.1f + .2f == .3f` is `false` (while `.1m + .2m == .3m` is `true`).  
I get that `==` is reference and `.Equals()` is value comparison. (_Edit_: I know there is more to this.)

But why is `(.1f + .2f).Equals(.3f)` `true`, while `(.1d+.2d).Equals(.3d)` is still `false`?

     .1f + .2f == .3f;              // false
    (.1f + .2f).Equals(.3f);        // true
    (.1d + .2d).Equals(.3d);        // false

(.1f+.2f==.3f) != (.1f+.2f).Equals(.3f) Why?

I can&#39;t figure out how to use switches in combination with an enum. Could you please tell me what I&#39;m doing wrong, and how to fix it? I have to use an enum to make a basic calculator. 


    public enum Operator
    {
        PLUS, MINUS, MULTIPLY, DIVIDE
    }

    public double Calculate(int left, int right, Operator op)
    {

        int i = (int) op;

        switch(i)
        {
            case 0:
            {
                return left + right;
            }

            case 1:
            {
                return left - right;
            }

            case 2:
            { 
                return left * right;
            }

            case 3:
            {
                return left / right;
            }

            default:
            {
                return 0.0;
            }
        }
    }

The end result should be something like this:

    Console.WriteLine(&quot;The sum of 5 and 5 is &quot; + Calculate(5, 5, PLUS))
    Output: The sum of 5 and 5 is 10

Could you guys please tell me how I&#39;m messing up?

C# how to use enum with switch

Setting default optional values in JavaScript is usually done via the `||` character

    var Car = function(color) {
      this.color = color || &#39;blue&#39;;
    };

    var myCar = new Car();
    console.log(myCar.color); // &#39;blue&#39;

    var myOtherCar = new Car(&#39;yellow&#39;);
    console.log(myOtherCar.color); // &#39;yellow&#39;

That works because `color` is `undefined` and `undefined || String` is always the `String`. Of course that also works the other way around `String || undefined` is `String`. When two `Strings` are present the first one wins `&#39;this&#39; || &#39;that&#39;` is `&#39;this&#39;`. It does NOT work the other way around as `&#39;that&#39; || &#39;this&#39;` is `&#39;that&#39;`.

The question is: How can I achieve the same with boolean values?

Take the following example

    var Car = function(hasWheels) {
      this.hasWheels = hasWheels || true;
    }

    var myCar = new Car();
    console.log(myCar.hasWheels); // true

    var myOtherCar = new Car(false)
    console.log(myOtherCar.hasWheels); // ALSO true !!!!!!

For `myCar` it works because `undefined || true` is `true` but as you can see it does NOT work for `myOtherCar` because `false || true` is `true`. Changing the order doesn&#39;t help as `true || false` is still `true`.

Therefore, am I missing something here or is the following the only way to set the default value?

    this.hasWheels = (hasWheels === false) ? false: true

Cheers!

How to set default boolean values in JavaScript?

How do you check if a boolean is null or not? So if I know &quot;hideInNav&quot; is null. How do I stop 
it from further executing? Something like the below doesn&#39;t seem to work but why? 

    boolean hideInNav = parent.getProperties().get(&quot;hideInNav&quot;, false);
    String hideNavigation = hideInNav != null ? hideInNav : &quot;&quot;;



Java check if boolean is null

I print a `bool` to an output stream like this:

    #include &lt;iostream&gt;

    int main()
    {
        std::cout &lt;&lt; false &lt;&lt; std::endl;
    }

Does the standard require a specific result on the stream (e.g. `0` for `false`)?

C++ printing boolean, what is displayed?

    if myval == 0:
       nyval=1
    if myval == 1:
       nyval=0

Is there a better way to do a toggle in python, like a  nyvalue = not myval ?


python how to &quot;negate&quot; value : if true return false, if false return true

Since ANSI C99 there is `_Bool` or `bool` via `stdbool.h`. But is there also a `printf` format specifier for bool?

I mean something like in that pseudo code:

    bool x = true;
    printf(&quot;%B\n&quot;, x);

which would print:

    true



What is the printf format specifier for bool?

I have a `QString` in my sources. 
So I need to convert it to integer **without &quot;Kb&quot;.** 

I tried `Abcd.toInt()` but it does not work.

    QString Abcd = &quot;123.5 Kb&quot;




How to convert QString to int?

I am just learning C and I have a little knowledge of Objective-C due to dabbling in iOS development, however, in Objective-C I was using `NSLog(@&quot;%i&quot;, x);` to print the variable _x_ to the console however I have been reading a few C tutorials and they are saying to use `%d` instead of `%i`.

`printf(&quot;%d&quot;, x);`
and `printf(&quot;%i&quot;, x);` both print _x_ to the console correctly. 

These both seem to get me to the same place so I am asking the experienced developers which is preferred? Is one more semantically correct or is _right_? 

%i or %d to print integer in C using printf()?

&gt;Convert the following int argument into a string without using any native toString functionality.
&gt;
    public string integerToString(int integerPassedIn){    
        //Your code here
    }

Since everything inherits from `Object` and `Object` has a `ToString()` method how would you convert an `int` to a `string` without using the native `ToString()` method?

The problem with string concatenation is that it will call `ToString()` up the chain until it hits one or hits the `Object` class.

How do you convert an integer to a string in C# without using `ToString()`?


How do I convert an Int to a String in C# without using ToString()?

I have a dataframe in pandas with mixed int and str data columns. I want to concatenate first the columns within the dataframe. To do that I have to convert an `int` column to `str`. 
I&#39;ve tried to do as follows:

    mtrx[&#39;X.3&#39;] = mtrx.to_string(columns = [&#39;X.3&#39;])

or 

    mtrx[&#39;X.3&#39;] = mtrx[&#39;X.3&#39;].astype(str)

but in both cases it&#39;s not working and I&#39;m getting an error saying &quot;cannot concatenate &#39;str&#39; and &#39;int&#39; objects&quot;. Concatenating two `str` columns is working perfectly fine.

Converting a column within pandas dataframe from int to string

Below is a code snippet,

    int a = 1;
    char b = (char) a;
    System.out.println(b);

But what I get is empty output.

    int a = &#39;1&#39;;
    char b = (char) a;
    System.out.println(b);

I will get 1 as my output. 

Can somebody explain this? And if I want to convert an int to a char as in the first snippet, what should I do?

Content Type	Original Author	Original Content on Stackoverflow
Question	DeepSea	View Question on Stackoverflow
Solution 1 - C#	Evelie	View Answer on Stackoverflow
Solution 2 - C#	Corak	View Answer on Stackoverflow
Solution 3 - C#	Rawling	View Answer on Stackoverflow
Solution 4 - C#	Stevan Dejanovic	View Answer on Stackoverflow

Better way to convert an int to a boolean

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Solution 4 - C#

Getting GET "?" Variable in Laravel

ruby 2.0 rails gem install error "cannot load such file -- openssl"

Attributions