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Is a statically-typed full Lisp variant possible?
...toms in the tree to be of the same type. We want them to be able to differ from leaf to leaf. A better approach requires the use of Haskell's existential quantifiers:
class Atomic a where ?????
data Cons = CCons Cons Cons
| forall a. Atomic a => CAtom a
But now you come to the cr...
Java maximum memory on Windows XP
...ddress space. Things that are likely to cut in to your address space aside from the usual stuff include security software, CBT software, spyware and other forms of malware. Likely causes of the variances are different security patches, C runtime versions, etc. Device drivers and other kernel bits ha...
Python, compute list difference
...n l2]
diff_lamb_filter = lambda l1,l2: filter(lambda x: x not in l2, l1)
from difflib import SequenceMatcher
def squeezer(a, b):
squeeze = SequenceMatcher(None, a, b)
return reduce(lambda p,q: p+q, map(
lambda t: squeeze.a[t[1]:t[2]],
filter(lambda x:x[0]!='equal',
squeeze.ge...
convert a char* to std::string
...rieved by fgets() . To do this I need to convert the char* return value from fgets() into an std::string to store in an array. How can this be done?
...
How can I open multiple files using “with open” in Python?
... of files all at the same time, you can use contextlib.ExitStack, starting from Python version 3.3:
with ExitStack() as stack:
files = [stack.enter_context(open(fname)) for fname in filenames]
# Do something with "files"
Most of the time you have a variable set of files, you likely want t...
Difference Between ViewData and TempData?
... much more complicated (the session) than a simple dictionary being passed from method to method
– Matti Virkkunen
Sep 17 '12 at 0:24
add a comment
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The 'Access-Control-Allow-Origin' header contains multiple values
... It seems like you are reading Properties.Settings.Default.Cors from a settings file. Can you post an example? And what class is UseCors in?
– Hoppe
Oct 21 '14 at 21:16
...
REST URI convention - Singular or plural name of resource while creating it
...t.". Ah the famous line I hear so often and get sick and tired of hearing from people. Conventions matter and SHOULD be debated constructively amongst the community, that's where better solutions come about and good practices. When you are using both plural and singular for resource names in URIs...
How to get unique values in an array
... "3", "1"].includes("2"); // true
Pollyfill (browser support, source from mozilla):
// https://tc39.github.io/ecma262/#sec-array.prototype.includes
if (!Array.prototype.includes) {
Object.defineProperty(Array.prototype, 'includes', {
value: function(searchElement, fromIndex) {
//...
How can I output UTF-8 from Perl?
...ore or less in utf8, will be output as latin1 by default. This way scripts from a pre-unicode era still work the same, even with a unicode-aware perl.
– mirod
Mar 10 '09 at 10:00
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