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How to parse JSON in Scala using standard Scala classes?
...answer, it led me down the right path. However, it isn't great at handling error conditions. If the desired node does not exist, you get a cast exception. I've adapted this slightly to make use of Option to better handle this.
class CC[T] {
def unapply(a:Option[Any]):Option[T] = if (a.isEmpty) {
...
How to change column datatype from character to numeric in PostgreSQL 8.4
...ed the datatype but after that unable to add the FK. Getting the following error ERROR: insert or update on table "invoices" violates foreign key constraint "invoice_presale_fk" DETAIL: Key (sale,cpf_cnpj)=(4,05943560000101) is not present in table "presales".
– user728630
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How can I pass a member function where a free function is expected?
...e preferable than using a void* interface as they remove the potential for errors due to a cast to the wrong type.
To clarify how to use a function pointer to call a member function, here is an example:
// the function using the function pointers:
void somefunction(void (*fptr)(void*, int, int), v...
When to use virtual destructors?
...would it make sense to have the compiler check this condition and issue an error is it is not satisfied?
– Giorgio
May 6 '12 at 9:29
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How do I capture response of form.submit
...er responded with: " + event.target.response); // raw response
};
// or onerror, onabort
var formData = new FormData(document.getElementById("myForm"));
xhr.send(formData);
For POST's the default content type is "application/x-www-form-urlencoded" which matches what we're sending in the above sn...
UITableView, Separator color where to set?
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This shows me an error 'separatorColor' is unavailable on tvOS.
– Banana
Nov 20 '15 at 15:42
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How to smooth a curve in the right way?
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I got the error Traceback (most recent call last): File "hp.py", line 79, in <module> ysm2 = savitzky_golay(y_data,51,3) File "hp.py", line 42, in savitzky_golay firstvals = y[0] - np.abs( y[1:half_window+1][::-1] - y...
How to get the insert ID in JDBC?
...de-effect of NOT setting the Statement.RETURN_GENERATED_KEYS option is the error message, which is the completely obscure "The statement must be executed before any results can be obtained."
– Chris Winters
Mar 3 '11 at 16:15
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How to create EditText with rounded corners? [closed]
... view from displaying my activity when I include the rounded edit box. The error log gives me a 'UnsupportedOperationException:null'. Any ideas?
– Ben Clayton
Apr 6 '11 at 15:13
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Check if string matches pattern
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There's a big need to compile to make sure there are no errors in the regular expressions like bad character range errors
– Suh Fangmbeng
May 6 at 17:10
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