Passing a hexadecimal value into a module in Verilog

Verilog treats all bare numeric literals as decimal. A and D are not legal decimal values. For hexadecimal literals, you need to specify the literal type using ‘h: Refer to the IEEE Std (1800-2009, for example), section “Numbers”. The following code compiles for me without errors on 2 different simulators (Incisive and VCS):

How are parameters sent in an HTTP POST request?

The values are sent in the request body, in the format that the content type specifies. Usually the content type is application/x-www-form-urlencoded, so the request body uses the same format as the query string: When you use a file upload in the form, you use the multipart/form-data encoding instead, which has a different format. It’s more complicated, but … Read more

Create a function with optional call variables

Powershell provides a lot of built-in support for common parameter scenarios, including mandatory parameters, optional parameters, “switch” (aka flag) parameters, and “parameter sets.” By default, all parameters are optional. The most basic approach is to simply check each one for $null, then implement whatever logic you want from there. This is basically what you have already … Read more

What does the construct x = x || y mean?

It means the title argument is optional. So if you call the method with no arguments it will use a default value of “Error”. It’s shorthand for writing: This kind of shorthand trick with boolean expressions is common in Perl too. With the expression: it evaluates to true if either a or b is true. So if a is true you don’t need to check b at all. This … Read more