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Can we define implicit conversions of enums in c#?
...r the following:
public sealed class AccountStatus
{
public static readonly AccountStatus Open = new AccountStatus(1);
public static readonly AccountStatus Closed = new AccountStatus(2);
public static readonly SortedList<byte, AccountStatus> Values = new SortedList<byte, Accou...
Passing arrays as parameters in bash
... of "takes...", why is an explicit array declaration needed? 3 - And what does the ! mean in the expression ${!1}, and why is [@] not required or even allowed there? -- This works, and all of these details seem to be needed based on my testing, but I would like to understand why!
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Split data frame string column into multiple columns
... @user3841581 - old query of yours I know, but this is covered in the documentation - str_split_fixed("aaa...bbb", fixed("..."), 2) works fine with fixed() to "Match a fixed string" in the pattern= argument. . means 'any character' in regex.
– thelatemail
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Counting null and non-null values in a single query
... @shannon I agree, COUNT(a) is a useful comment to add, but this does throw a warning/error depending on your stack and might warrant a comment in code. I would prefer the SUM method.
– Richard
Mar 29 '16 at 9:41
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Compiling with g++ using multiple cores
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You can do this with make - with gnu make it is the -j flag (this will also help on a uniprocessor machine).
For example if you want 4 parallel jobs from make:
make -j 4
You can also run gcc in a pipe with
gcc -pipe
This will...
MySQL foreign key constraints, cascade delete
...I think I wrote my question the wrong way. If I delete a category then how do I make sure that it would not delete products that also are related to other categories.
– Cudos
May 27 '10 at 7:26
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How to use Sublime over SSH
...ime-text-2/ (among many other posts) that looks like it might help, but I don't follow it exactly, particularly with what values I should put in for the remote variable in line 5. I set "/Users/path/to/local/copy" to my local root directory, but I don't know if that's right or if there's more to d...
Any reason to prefer getClass() over instanceof when generating .equals()?
...ansitivity requirements of the equals contract.
– Shadow Man
Jul 16 '19 at 0:14
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How to use the toString method in Java?
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From the Object.toString docs:
Returns a string representation of the
object. In general, the toString
method returns a string that
"textually represents" this object.
The result should be a concise but
informative representation that i...
Windows batch file file download from a URL
I am trying to download a file from a website (ex. http://www.example.com/package.zip ) using a Windows batch file. I am getting an error code when I write the function below:
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