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JavaScript: Get image dimensions
...mage could load just before the code reachs setting the onload itself, resulting in the listener never being called. Using analogies, if you are serving yourself a glass with water, do you first pour the water and next you put the glass to fill it? Or do you first put the glass and then you pour th...
How does java do modulus calculations with negative numbers?
...e inputs then you can use this:
int r = x % n;
if (r > 0 && x < 0)
{
r -= n;
}
Likewise if you were using a language that returns a negative number on a negative input and you would prefer positive:
int r = x % n;
if (r < 0)
{
r += n;
}
...
How do I write stderr to a file while using “tee” with a pipe?
...r.$$"
mkfifo "$out" "$err"
trap 'rm "$out" "$err"' EXIT
tee -a stdout.log < "$out" &
tee -a stderr.log < "$err" >&2 &
command >"$out" 2>"$err"
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Iterating over Java collections in Scala
... something like:
import scala.collection.JavaConverters._
// ...
for(k <- javaCollection.asScala) {
// ...
}
(notice the import, new is JavaConverters, deprecated is JavaConversions)
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...
Print a string as hex bytes?
...thon 3.6.8 (at least): "hex" is not an encoding of strings. codecs.encode(<bytestring>, "hex") does work, though.
– Eric O Lebigot
Dec 18 '19 at 14:02
2
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Git - Pushing code to two remotes [duplicate]
...
In recent versions of Git you can add multiple pushurls for a given remote. Use the following to add two pushurls to your origin:
git remote set-url --add --push origin git://original/repo.git
git remote set-url --add --push origin git://another/repo.git
So when...
Best way to merge two maps and sum the values of same key?
I want to merge them, and sum the values of same keys. So the result will be:
15 Answers
...
Defining static const integer members in class definition
... How would I write the definition if AE is a template class AE<class T> and c7 is not an int but T::size_type? I have the value initialized to "-1" in the header but clang says undefined value and I don't know how to write the definition.
– Fabian
...
What does a tilde in angle brackets mean when creating a Java generic class?
...ava 7 allows the diamond operator so this is/will be legal Java code:
Map<String, List<String>> map = new HashMap<>();
(but - no tilde with this syntax)
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Get the generated SQL statement from a SqlCommand object?
... case SqlDbType.Bit:
retval = (sp.Value.ToBooleanOrDefault(false)) ? "1" : "0";
break;
default:
retval = sp.Value.ToString().Replace("'", "''");
break;
}
return retval;
}
public static String Co...