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How can I detect if a selector returns null?
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I have exactly the same code in my standard toolkit. This form is equivalent to object.presence in Rails and super useful in the fallthrough construct that @CSharp describes.
– inopinatus
Aug 27 '15 at 23:12
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Convert datetime object to a String of date only in Python
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You can use strftime to help you format your date.
E.g.,
import datetime
t = datetime.datetime(2012, 2, 23, 0, 0)
t.strftime('%m/%d/%Y')
will yield:
'02/23/2012'
More information about formatting see here
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How to execute a Ruby script in Terminal?
...er1/program/test.rb
Open terminal
cd /home/User1/program
ruby test.rb
format or test.rb
class Test
def initialize
puts "I love India"
end
end
# initialize object
Test.new
output
I love India
share
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Best lightweight web server (only static content) for Windows [closed]
... static content only web server on this same machine which will relive IIS form handling static content and increase performance.
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Convert JSON to Map
... FWTW, while @obe6's answer is technically correct, you can use shorter form too: Map<String,Object> result = mapper.readValue(source, Map.class).
– StaxMan
Nov 28 '18 at 6:40
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Actual examples for HATEOAS (REST-architecture) [closed]
...plication/xml? It would depend on some non-standard ways of passing this information, like documentation meant to be read by humans.
– ygormutti
Oct 14 '15 at 20:34
add a comm...
How to do 3 table JOIN in UPDATE query?
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So does that mean that in 5.5 only implicit joins form is accepted for update?
– userfuser
Dec 28 '15 at 15:06
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AngularJS Directive Restrict A vs E
...rectives to the same DOM node. This is particularly handy for things like form controls where you can highlight, disable, or add labels etc. with additional attributes without having to wrap the element in a bunch of tags.
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How to convert an NSString into an NSNumber
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Use an NSNumberFormatter:
NSNumberFormatter *f = [[NSNumberFormatter alloc] init];
f.numberStyle = NSNumberFormatterDecimalStyle;
NSNumber *myNumber = [f numberFromString:@"42"];
If the string is not a valid number, then myNumber will be n...
Including a groovy script in another groovy
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The filename needs to conform to Java's class naming rules for this to work.
– willkil
Apr 8 '13 at 18:56
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