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Get Character value from KeyCode in JavaScript… then trim
...inputs?
$("input").bind("keyup",function(e){
var value = this.value + String.fromCharCode(e.keyCode);
});
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Pretty Printing a pandas dataframe
... , 1e-006, 1e-007],
'column_3' : ['ABCD', 'ABCD', 'long string', 'ABCD']})
print(tabulate(df, headers='keys', tablefmt='psql'))
+----+-----------+-------------+
| | col_two | column_3 |
|----+-----------+-------------|
| 0 | 0.0001 | ABCD |
| 1 | 1e-05 | A...
When vectors are allocated, do they use memory on the heap or the stack?
... // Can't be on stack - how would the stack "expand"
// to make the extra space required between main and foo?
vec.push_back(Type());
}
int main() {
vector<Type> bar;
foo(bar);
}
Likewise:
vector<Type> *vect = new vector<Type>; //allocates vect on hea...
Microsoft Roslyn vs. CodeDom
...uch finer control of the whole process - for example you could analyse the string and even generate additional code (on-the-fly within the compile process based on the analysis), etc.
CodeDom is "just using the compiler" while Roslyn is "compiler as a service with full access to (sub-) parts"... wi...
How to enter a multi-line command
...t is preceded by a valid statement:
return
5
will not work.
Finally, strings (in all varieties) may also extend beyond a single line:
'Foo
bar'
They include the line breaks within the string, then.
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When is -XAllowAmbiguousTypes appropriate?
...stances, OverlappingInstances #-}
class Foo a where
whichOne :: a -> String
instance Foo a where
whichOne _ = "a"
instance Foo [a] where
whichOne _ = "[a]"
-- |
-- >>> main
-- [a]
main :: IO ()
main = putStrLn $ whichOne (undefined :: [Int])
But GHC is not okay with overlappi...
Resolving javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path
... java.net.URL;
public class HTTPSPlayground {
public static void main(String[] args) throws Exception {
URL url = new URL("https:// ... .com");
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setRequestMethod("POST");
...
warning this call is not awaited, execution of the current method continues
...u need the result, you can change the GetNameAsync to return, say, Task<string>:
public static async Task<string> GetNameAsync()
{
string firstname = await PromptForStringAsync("Enter your first name: ");
string lastname = await PromptForStringAsync("Enter your last name: ");
...
Set value to NULL in MySQL
...d'] == '')) {
$val = 'NULL';
} else {
$val = "'" . mysql_real_escape_string($_POST['nullfield']) . "'";
}
$sql = "INSERT INTO .... VALUES ($val)";
if you put 'NULL' into your query, then you're just inserting a 4-character string. Without the quotes, NULL is the actual null value.
...
How to add items to a spinner in Android?
...reate(savedInstanceState);
setContentView(R.layout.main);
String[] arraySpinner = new String[] {
"1", "2", "3", "4", "5", "6", "7"
};
Spinner s = (Spinner) findViewById(R.id.Spinner01);
ArrayAdapter<String> adapter = new ArrayAdapter<Stri...