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Using Java 8 to convert a list of objects into a string obtained from the toString() method
...lt;Integer> list = new ArrayList<>();
list.add(1);
list.add(2);
list.add(3);
StringBuilder b = new StringBuilder();
list.forEach(b::append);
System.out.println(b);
you can also try:
String s = list.stream().map(e -> e.toString()).reduce("", String::concat);
Expla...
How to lose margin/padding in UITextView?
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22 Answers
22
Active
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Using the RUN instruction in a Dockerfile with 'source' does not work
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329
RUN /bin/bash -c "source /usr/local/bin/virtualenvwrapper.sh"
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Difference between List, List, List, List, and List
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1) Correct
2) You can think of that one as "read only" list, where you don't care about the type of the items.Could e.g. be used by a method that is returning the length of the list.
3) T, E and U are the same, but people tend to use ...
Environment variables in Mac OS X
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edited Apr 5 '18 at 1:32
answered Sep 21 '10 at 1:20
Mat...
Insert a commit before the root commit in Git?
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325
+200
There a...
PHP: How to remove all non printable characters in a string?
I imagine I need to remove chars 0-31 and 127,
17 Answers
17
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How to share my Docker-Image without using the Docker-Hub?
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251
Docker images are stored as filesystem layers. Every command in the Dockerfile creates a layer...
How to check if anonymous object has a method?
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282
typeof myObj.prop2 === 'function'; will let you know if the function is defined.
if(typeof my...
@Override is not allowed when implementing interface method
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124
If your project has multiple modules, also check that every module uses language level 6 or abo...