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How can I parse a YAML file from a Linux shell script?
...YAML types and syntax oddities are correctly handled, as multiline, quoted strings, inline sequences...
\0 padded output is available for solid multiline entry manipulation.
simple dotted notation to select sub-values (ie: subvalue.maintainer is a valid key).
access by index is provided to sequenc...
Case statement with multiple values in each 'when' block
...on happens: When I write this: when "toyota", "lexus", I get: unexpected tSTRING_BEG, expecting keyword_do or '{' or '(' (SyntaxError). However, when I write this: when "toyota","lexus", it works. The only difference is a space after comma.
– Furkan Ayhan
N...
Disable browser's back button
...oment and removes it again. BTW - it doesn't have to be "1", it can be any string.
– Yossi Shasho
Nov 29 '11 at 12:35
2
...
How to return a result (startActivityForResult) from a TabHost Activity?
...ode == RESULT_OK) {
Bundle res = data.getExtras();
String result = res.getString("param_result");
Log.d("FIRST", "result:"+result);
}
break;
}
}
private void finishWithResult()
{
Bundle conData = new Bundle();
conData.putString("param_...
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...