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Good examples of Not a Functor/Functor/Applicative/Monad?
...onoid;
instance Monoid Data.Void where
mempty = undefined
mappend _ _ = undefined
mconcat _ = undefined
Since _|_ is a legal value in Haskell, and in fact the only legal value of Data.Void, this meets the Monoid rules. I am unsure what unsafeCoerce has to do with it, because your pro...
Ways to implement data versioning in MongoDB
...nt contain a dictionary of time-stamped diffs. Something like this:
{
_id : "id of address book record",
changes : {
1234567 : { "city" : "Omaha", "state" : "Nebraska" },
1234568 : { "city" : "Kansas City", "state" : "Missouri" }
}
}
To make...
Using sections in Editor/Display templates
...sult> template)
{
htmlHelper.ViewContext.HttpContext.Items["_script_" + Guid.NewGuid()] = template;
return MvcHtmlString.Empty;
}
public static IHtmlString RenderScripts(this HtmlHelper htmlHelper)
{
foreach (object key in htmlHelper.ViewContext.HttpContex...
How to get first element in a list of tuples?
...
do you mean something like this?
new_list = [ seq[0] for seq in yourlist ]
What you actually have is a list of tuple objects, not a list of sets (as your original question implied). If it is actually a list of sets, then there is no first element because set...
How to add new column to MYSQL table?
...
Thanks, It worked with - mysql_query("ALTER TABLE assessment ADD q6 INT(1) NOT NULL AFTER q5");
– Steven Trainor
Apr 19 '13 at 21:33
...
How to set environment variables in Jenkins?
...red May 16 '12 at 20:28
malenkiy_scotmalenkiy_scot
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...
What is the difference between “ is None ” and “ ==None ”
...
class Foo:
def __eq__(self,other):
return True
foo=Foo()
print(foo==None)
# True
print(foo is None)
# False
share
|
improve thi...
What is the Java string pool and how is “s” different from new String(“s”)? [duplicate]
... a reference to an instance of class String, and is derived from a CONSTANT_String_info structure (§4.4.3) in the binary representation of a class or interface. The CONSTANT_String_info structure gives the sequence of Unicode code points constituting the string literal.
The Java programming la...
Simplest two-way encryption using PHP
...
Edited:
You should really be using openssl_encrypt() & openssl_decrypt()
As Scott says, Mcrypt is not a good idea as it has not been updated since 2007.
There is even an RFC to remove Mcrypt from PHP - https://wiki.php.net/rfc/mcrypt-viking-funeral
...
Cookies on localhost with explicit domain
...ill consider them invalid. (See reference on http://curl.haxx.se/rfc/cookie_spec.html)
When working on localhost, the cookie domain must be omitted entirely. Just setting it to "" or NULL or FALSE instead of "localhost" is not enough.
For PHP, see comments on http://php.net/manual/en/function.set...