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How to define @Value as optional
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What is the correct way to specify that @Value is not required?
Working on the assumption that by 'not required' you mean null then...
You have correctly noted that you can supply a default value to the right of a : character. Your example was @Value("$...
What is declarative programming? [closed]
I keep hearing this term tossed around in several different contexts. What is it?
18 Answers
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Why is parenthesis in print voluntary in Python 2.7?
... a Tuple. This special treatment of the print statement enables it to act differently if there is a trailing , or not.
Happy coding.
*This print behavior in Python 2 can be changed to that of Python 3:
from __future__ import print_function
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Mercurial - all files that changed in a changeset?
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If you want to list only files that have changed then you should be using "status command"
The following will list the changes to files in revision REV
hg status --change REV
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What is the difference between exit(0) and exit(1) in C?
Can anyone tell me? What is the difference between exit(0) and exit(1) in C language?
11 Answers
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Converting java.util.Properties to HashMap
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Or if you don't have already the map in hand properties.entrySet().stream().collect(Collectors.toMap(e->(String)e.getKey(),e->(String)e.getValue()))
– Tonsic
May 30 '18 at 18:10
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Understanding Spliterator, Collector and Stream in Java 8
...never have to deal with Spliterator as a user; it should only be necessary if you're writing Collection types yourself and also intending to optimize parallelized operations on them.
For what it's worth, a Spliterator is a way of operating over the elements of a collection in a way that it's easy ...
filename and line number of python script
... @gsinha: Every function call has performance impact. You have to measure if this impact is acceptable for you.
– omikron
Nov 9 '15 at 14:45
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RestSharp JSON Parameter Posting
...n;
request.AddBody(new { A = "foo", B = "bar" }); // uses JsonSerializer
If you just want POST params instead (which would still map to your model and is a lot more efficient since there's no serialization to JSON) do this:
request.AddParameter("A", "foo");
request.AddParameter("B", "bar");
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Could not load file or assembly 'xxx' or one of its dependencies. An attempt was made to load a prog
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If you get this error while running the site in IIS 7+ on 64bit servers, you may have assemblies that are 32bit and your application pool will have the option "Enable 32-Bit Applications" set to False; Set this to true and re...