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Factors in R: more than an annoyance?
... of why they're a pain is because in read.table and read.csv, the argument stringsAsFactors = TRUE by default (and most users miss this subtlety). I say they are useful because model fitting packages like lme4 use factors and ordered factors to differentially fit models and determine the type of con...
How do you express binary literals in Python?
...
This is interesting for when you have strings, but if working with pure numbers, you add unnecessary computations to the code.
– Daniel Möller
Aug 18 '17 at 17:34
...
How to call a Parent Class's method from Child Class in Python?
...y haven't been overwritten.
e.g. in python 3:
class A():
def bar(self, string):
print("Hi, I'm bar, inherited from A"+string)
class B(A):
def baz(self):
self.bar(" - called by baz in B")
B().baz() # prints out "Hi, I'm bar, inherited from A - called by baz in B"
yes, this may be fa...
Check if a Class Object is subclass of another Class Object in Java
... handle some fields. Now I'm stuck with identifying the type of my fields. Strings are easy, just do myField.getType().equals(String.class) . The same applies for other non-derived classes. But how do I check derived classes? E.g. LinkedList as subclass of List . I can't find any isSubclassOf(....
request exceeds the configured maxQueryStringLength when using [Authorize]
... request comes in, the entire request is URL encoded, and added as a query string to the request to the authorization form, so I can see where this may result in a problem given your situation.
According to MSDN, the correct element to modify to reset maxQueryStringLength in web.config is the <h...
Best way to store JSON in an HTML attribute?
...ct.
What if the JSON contains special characters? (e.g. {test: '<"myString/>'})
Just follow the normal rules for including untrusted data in attribute values. Use &amp; and &quot; (if you’re wrapping the attribute value in double quotes) or &#x27; (if you’re wrapping the ...
Unique Key constraints for multiple columns in Entity Framework
...
EF 6 and below:
First approach:
dbContext.Database.ExecuteSqlCommand(string.Format(
@"CREATE UNIQUE INDEX LX_{0} ON {0} ({1})",
"Entitys", "FirstColumn, SecondColumn"));
This approach is very fast and useful but the main problem is th...
How to format numbers by prepending 0 to single-digit numbers?
... myNumber - dec;
var formattedNumber = ("0" + myNumber).slice(-2) + dec.toString().substr(1);
console.log(formattedNumber);
Lastly, if you're having to deal with the possibility of negative numbers, it's best to store the sign, apply the formatting to the absolute value of the number, and r...
Accessing @attribute from SimpleXML
...xmlelement.attributes
Example code from that page:
$xml = simplexml_load_string($string);
foreach($xml->foo[0]->attributes() as $a => $b) {
echo $a,'="',$b,"\"\n";
}
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How to reset or change the MySQL root password?
...lumn doesn't exist, you may want to try:
UPDATE user SET authentication_string=password('YOURNEWPASSWORD') WHERE user='root';
Note: This method is not regarded as the most secure way of resetting the password, however, it works.
References:
Set / Change / Reset the MySQL root password on Ubu...