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Full Discussion: For Loop and concetnating values in a variable
Top Forums UNIX for Dummies Questions & Answers For Loop and concetnating values in a variable Post 302091481 by Glenn Arndt on Tuesday 3rd of October 2006 09:04:43 AM
Old 10-03-2006
Quote:
Originally Posted by nervous
Dear Glen,

Just want to clarify one thing about $1 ~ key, that here match operator ~ was not required, because as per my understanding, match operator is required only in case where we have to compare a value against a regular expression, for comparing values against variables or constants we can use something like $1==key am I right?

It would be hightly appreciated if you can elaborate the detailed use of match operator ~
That is correct. I suppose I used "~" out of habit or by mistake. While correct in this case, I'd probably agree that "==" would be the more technically appropriate operator.
 

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LEARN ABOUT XFREE86

glcolormask

GLCOLORMASK(3G) 														   GLCOLORMASK(3G)

NAME

       glColorMask - enable and disable writing of frame buffer color components

C SPECIFICATION

       void glColorMask( GLboolean red,
			 GLboolean green,
			 GLboolean blue,
			 GLboolean alpha )

PARAMETERS

       red, green, blue, alpha
			     Specify  whether  red, green, blue, and alpha can or cannot be written into the frame buffer.  The initial values are
			     all GL_TRUE, indicating that the color components can be written.

DESCRIPTION

       glColorMask specifies whether the individual color components in the frame buffer can or cannot be written.  If red is GL_FALSE, for  exam-
       ple, no change is made to the red component of any pixel in any of the color buffers, regardless of the drawing operation attempted.

       Changes to individual bits of components cannot be controlled.  Rather, changes are either enabled or disabled for entire color components.

ERRORS

       GL_INVALID_OPERATION is generated if glColorMask is executed between the execution of glBegin and the corresponding execution of glEnd.

ASSOCIATED GETS

       glGet with argument GL_COLOR_WRITEMASK
       glGet with argument GL_RGBA_MODE

SEE ALSO

       glClear(3G), glColor(3G), glColorPointer(3G), glDepthMask(3G), glIndex(3G), glIndexPointer(3G), glIndexMask(3G), glStencilMask(3G)

																   GLCOLORMASK(3G)
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