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Best way to find the intersection of multiple sets?
...lving reduce. It can in general be used quite nicely to build lists, sets, strings etc. Worth a look also is github.com/EntilZha/PyFunctional
– Andreas
Nov 16 '16 at 6:03
...
How to create local notifications?
...utableNotificationContent alloc] init];
objNotificationContent.title = [NSString localizedUserNotificationStringForKey:@“Notification!” arguments:nil];
objNotificationContent.body = [NSString localizedUserNotificationStringForKey:@“This is local notification message!“arguments:nil];
objNo...
Custom sort function in ng-repeat
...
Actually the orderBy filter can take as a parameter not only a string but also a function. From the orderBy documentation: https://docs.angularjs.org/api/ng/filter/orderBy):
function: Getter function. The result of this function will be sorted
using the <, =, > operator.
S...
Static methods in Python?
... static method is str.maketrans() in Python 3, which was a function in the string module in Python 2.
Another option that can be used as you describe is the classmethod, the difference is that the classmethod gets the class as an implicit first argument, and if subclassed, then it gets the subcla...
How can I combine hashes in Perl?
...es an empty vs non-empty value in the first place? (eg. undef, zero, empty string, false, falsy ...)
See also
PM post on merging hashes
PM Categorical Q&A hash union
Perl Cookbook 5.10. Merging Hashes
websearch://perlfaq "merge two hashes"
websearch://perl merge hash
https://metacpan.org/po...
Summarizing multiple columns with dplyr? [duplicate]
...To map `funs` over a selection of variables, use `summarise_at()`
# Error: Strings must match column names. Unknown columns: mean
You should change to the following code. The following codes all have the same result.
# summarise_at
df %>% group_by(grp) %>%
summarise_at(.vars = letters[1...
What are Flask Blueprints, exactly?
... fir\leaves will point tot the same code? Also, what is the purpose of the string mold in Blueprint("mold", __name__)
– Codevalley
Aug 7 '17 at 6:48
...
How do I enable gzip compression when using MVC3 on IIS7?
... filterContext.HttpContext.Request.Headers["Accept-Encoding"];
if (string.IsNullOrEmpty(encodingsAccepted)) return;
encodingsAccepted = encodingsAccepted.ToLowerInvariant();
var response = filterContext.HttpContext.Response;
if (encodingsAccepted.Contains("deflate")...
HMAC-SHA1 in bash
...mber to use -n with echo or else a line break character is appended to the string and that changes your data and the hash.
That command comes from the OpenSSL package which should already be installed (or easily installed) in your choice of Linux/Unix, Cygwin and the likes.
Do note that older vers...
Get nodes where child node contains an attribute
...e
import com.ximpleware.*;
public class test1 {
public static void main(String[] s) throws Exception{
VTDGen vg = new VTDGen();
if (vg.parseFile("c:/books.xml", true)){
VTDNav vn = vg.getNav();
AutoPilot ap = new AutoPilot(vn);
ap.selectXPath("//book[titl...