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What does “Could not find or load main class” mean?
...with signature, return type and modifiers given by public static void main(String[]). (Note, the method argument's name is NOT part of the signature.)
Call that method passing it the command line arguments ("fred", "joe", "bert") as a String[].
Reasons why Java cannot find the class
When you get...
Should I use encodeURI or encodeURIComponent for encoding URLs?
...cial meaning, so you use it for components of URIs such as
var world = "A string with symbols & characters that have special meaning?";
var uri = 'http://example.com/foo?hello=' + encodeURIComponent(world);
share
...
How to find out which package version is loaded in R?
...l_0.3
[7] proto_0.3-9.2 RColorBrewer_1.0-5 scales_0.2.0 stringr_0.6
>
However, as per comments and the answer below, there are better options
> packageVersion("snow")
[1] ‘0.3.9’
Or:
"Rmpi" %in% loadedNamespaces()
...
Setting Windows PowerShell environment variables
... ****Don't forget the semicolon at the start of the appending string, as seen in @Kevin 's comment. This is pretty obvious, but can be missed if you simply copy/paste the code in the answer and didn't have a semicolon at the end of the existing path. I'll try to submit an edit.
...
Oracle query to fetch column names
...ific user. in your case, I'd imagine the query would look something like:
String sqlStr= "
SELECT column_name
FROM all_tab_cols
WHERE table_name = 'USERS'
AND owner = '" +_db+ "'
AND column_name NOT IN ( 'PASSWORD', 'VERSION', 'ID' )"
Note that with this approach, you risk SQL injection....
Postgresql GROUP_CONCAT equivalent?
...ifications:
The result of casting an array to text is that the resulting string starts and ends with curly braces. Those braces need to be removed by some method, if they are not desired.
Casting ANYARRAY to TEXT best simulates CSV output as elements that contain embedded commas are double-quot...
How to use '-prune' option of 'find' in sh?
...ge.org/UsingFind)
Just noticed -path is for a path that fully matches the string/path that comes just after find (. in theses examples) where as -name matches all basenames.
find . -path ./.git -prune -o -name file -print
blocks the .git directory in your current directory ( as your finding in...
Check if URL has certain string with PHP
I would like to know if some word is present in the URL.
15 Answers
15
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What does -> mean in Python function definitions?
...
It's a function annotation.
In more detail, Python 2.x has docstrings, which allow you to attach a metadata string to various types of object. This is amazingly handy, so Python 3 extends the feature by allowing you to attach metadata to functions describing their parameters and return ...
Why is  appearing in my HTML? [duplicate]
...r, $win32);
}
}
}
// Searching for BOM in files
function SearchBOM($string) {
if(substr($string,0,3) == pack("CCC",0xef,0xbb,0xbf)) return true;
return false;
}
?>
</body>
</html>
copy this code to php file upload to root and run it.
for more about this: http://for...