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How can I add to List
...t you add a number
untypedList.add(200);
// But it will also let you add a String! BAD!
untypedList.add("foo");
// YOU PROBABLY WANT THIS
// This is safer, because it will (partially) check the type of anything you add
List<Number> superclassedList = (List<Number>)(List<?>)list;
...
Most efficient way of making an if-elif-elif-else statement when the else is done the most?
...for 'this', 'that', and 'there' - and then comparing hash codes instead of strings. That turned out to be twice as slow as the original, so it looks like string comparisons are already pretty well optimised internally.
– foz
Jun 18 '13 at 16:23
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Seeding the random number generator in Javascript
...lly, hash functions are very good at generating seeds for PRNGs from short strings. A good hash function will generate very different results even when two strings are similar. Here's an example based on MurmurHash3's mixing function:
function xmur3(str) {
for(var i = 0, h = 1779033703 ^ str.le...
Best way to detect Mac OS X or Windows computers with JavaScript or jQuery
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The window.navigator.platform property is not spoofed when the userAgent string is changed.
I tested on my Mac if I change the userAgent to iPhone or Chrome Windows, navigator.platform remains MacIntel.
The property is also read-only
I could came up with the following table
Mac Compute...
How to overcome TypeError: unhashable type: 'list'
...b'x') (which makes sure you are splitting the byte with the proper type of string). You can also open the file using with open('filename.txt', 'rU') as f: (or even with open('filename.txt', 'r') as f:) and it should work fine.
...
Ruby custom error classes: inheritance of the message attribute
.... By supplying a to_str method,
exceptions are agreeing to be used where Strings are expected.
http://ruby-doc.org/core-1.9.3/Exception.html#method-i-message
I would opt for redefining to_s/to_str or the initializer. Here is an example where we want to know, in a mostly human readable way, whe...
Why Large Object Heap and why do we care?
... Gen0 collections, but if one creates and abandons e.g. an array of 22,000 strings to which no outside references exist, what advantage exists to having Gen0 and Gen1 collections tag all 22,000 strings as "live" without regard for whether any reference exists to the array?
– su...
How to read keyboard-input?
...
always put an space after your string for the user to enter his input if peace. Enter Tel12340404 vs Enter Tel: 12340404. see! :P
– Mehrad
May 6 '14 at 0:10
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CMake output/build directory
...o an out of source build
MACRO(MACRO_ENSURE_OUT_OF_SOURCE_BUILD MSG)
STRING(COMPARE EQUAL "${CMAKE_SOURCE_DIR}"
"${CMAKE_BINARY_DIR}" insource)
GET_FILENAME_COMPONENT(PARENTDIR ${CMAKE_SOURCE_DIR} PATH)
STRING(COMPARE EQUAL "${CMAKE_SOURCE_DIR}"
"${PARENTDIR}" insourcesubdi...
All permutations of a Windows license key
... Nice! It never ocurred to me that you could use operator.mod to do string formatting too.
– Tom
Feb 4 '13 at 22:25
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