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Detecting endianness programmatically in a C++ program
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The network conversion ops can also be used to convert everything to big endian, thus solving other problems Jay may be encountering.
– Brian
Jun 16 '09 at 13:15
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Numpy: find first index of value fast
...Python and Fortran code are available. I skipped the unpromising ones like converting to a list.
The results on log scale. X-axis is the position of the needle (it takes longer to find if it's further down the array); last value is a needle that's not in the array. Y-axis is the time to find it.
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How to sort two lists (which reference each other) in the exact same way
...nning your example: TypeError: only integer arrays with one element can be converted to an index (Python 2.7.6, numpy 1.8.2). To fix it, list1 and list2 must be declared as numpy arrays.
– BenB
Jul 7 '15 at 0:53
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How to add to an existing hash in Ruby
...onfuses this somewhat by providing HashWithIndifferentAccess where it will convert freely between Symbol and String methods of addressing.
You can also index on nearly anything, including classes, numbers, or other Hashes.
hash = { Object => true, Hash => false }
hash[Object]
# => true
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Default parameters with C++ constructors [closed]
... you have defaults for all but one parameter, your class can be implicitly converted from that parameter type. Check out this thread for more info.
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MySQL Cannot Add Foreign Key Constraint
...mand to set the encoding and collation for a table.
ALTER TABLE tablename CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;
I hope this helps someone.
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Determining if an Object is of primitive type
...uto-boxing. The compiler does this itself. When it sees an opportunity, it converts a primitive type into its appropriate wrapper class.
What is probably happening here is when you declare
Object o = i;
The compiler will compile this statement as saying
Object o = Integer.valueOf(i);
This is ...
Generate colors between red and green for a power meter?
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To directly convert to a hex color code, you might want to leverage String.format("#%06X", 0xFFFFFF & getTrafficlightColor(value));
– ngeek
May 11 '16 at 8:01
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delete map[key] in go?
.... Deleting a non-existent entry is a no-op.
Updating: Running go fix will convert expressions of the form m[k] = value, false into delete(m, k) when it is clear that the ignored value can be safely discarded from the program and false refers to the predefined boolean constant. The fix tool will fla...
Elegant way to invert a map in Scala
...Int,String] = Map(1 -> d, 2 -> b, 3 -> c)
To avoid this you can convert your map to a list of tuples first, then invert, so that you don't drop any duplicate values:
scala> val i = m.toList.map({ case(k , v) => v -> k})
i: List[(Int, String)] = List((1,a), (2,b), (3,c), (1,d))
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