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Concatenating two std::vectors
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vector1.insert( vector1.end(), vector2.begin(), vector2.end() );
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jQuery: select an element's class and id at the same time?
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Tintin81
8,5361717 gold badges6262 silver badges131131 bronze badges
answered Dec 22 '09 at 5:24
cletuscletus
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PostgreSQL return result set as JSON array?
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TL;DR
SELECT json_agg(t) FROM t
for a JSON array of objects, and
SELECT
json_build_object(
'a', json_agg(t.a),
'b', json_agg(t.b)
)
FROM t
for a JSON object of arrays.
List of objects
This section describes how to generate a JSON array of objects, ...
How to get just the parent directory name of a specific file
How to get ddd from the path name where the test.java resides.
10 Answers
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How can I return to a parent activity correctly?
I have 2 activities (A and B) in my android application and I use an intent to get from activity A to activity B. The use of parent_activity is enabled:
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In C++, is it still bad practice to return a vector from a function?
Short version: It's common to return large objects—such as vectors/arrays—in many programming languages. Is this style now acceptable in C++0x if the class has a move constructor, or do C++ programmers consider it weird/ugly/abomination?
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Removing duplicate rows in vi?
I have a text file that contains a long list of entries (one on each line). Some of these are duplicates, and I would like to know if it is possible (and if so, how) to remove any duplicates. I am interested in doing this from within vi/vim, if possible.
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How to join two sets in one line without using “|”
...edited Jun 26 '17 at 12:03
Rishabh Agrahari
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answered Jul 2 '13 at 15:57
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Short form for Java if statement
...me() == null) ? "N/A" : city.getName());
I think you have the conditions backwards - if it's null, you want the value to be "N/A".
What if city is null? Your code *hits the bed in that case. I'd add another check:
name = ((city == null) || (city.getName() == null) ? "N/A" : city.getName());
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How do I recover/resynchronise after someone pushes a rebase or a reset to a published branch?
We have all heard that one should never rebase published work, that it’s dangerous, etc. However, I have not seen any recipes posted for how to deal with the situation in case a rebase is published.
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