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How do I count unique values inside a list
...s are thrown away, and list.count() is O(n) anyway. You don't even need to convert aa to list at all. See Vidul's answer instead.
– wjandrea
Sep 23 at 15:38
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Why do we need the “event” keyword while defining events?
...r more on events (and delegates) read my article on this topic. (At some point I need to update this for C# 4, which changes field-like events very slightly. The gist of it is still correct though.)
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How to run a PowerShell script without displaying a window?
...t. It exits quickly but we're trying to run this in the background without interruption.
– Nathan McKaskle
Aug 23 '16 at 15:30
2
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How to find out the number of CPUs using python
...perthreaded cpus, which may not be what you want if you are scheduling cpu-intensive tasks.
– Christopher Barber
Jun 7 '19 at 15:21
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How is it possible to declare nothing inside main() in C++ and yet have a working application after
In an interview I was confronted with a question such as this:
6 Answers
6
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How do I create a foreign key in SQL Server?
...ntifier not null,
question_text varchar(1024) not null,
question_point_value decimal,
constraint fk_questionbank_exams foreign key (question_exam_id) references exams (exam_id)
);
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TextView - setting the text size programmatically doesn't seem to work
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the method TextView.setTextSize(int unit , float size); takes two parameters .
Try this :
text.setTextSize(TypedValue.COMPLEX_UNIT_SP,14);
refer this and this.
UPDATE:
Now the setTextSize(float size) will set the text size automatically in "scaled pix...
Is there a difference between foo(void) and foo() in C++ or C?
...aking no arguments"
By writing foo(void), therefore, we achieve the same interpretation across both languages and make our headers multilingual (though we usually need to do some more things to the headers to make them truly cross-language; namely, wrap them in an extern "C" if we're compiling C++...
Change auto increment starting number?
...ORK;
-- You may also need to add other mandatory columns and values
INSERT INTO t (id) VALUES (42);
ROLLBACK;
In this way, even if you're rolling back the transaction, MySQL will keep the auto-increment value, and the change will be applied instantly.
You can verify this by issuing a SHOW CREATE ...
Can I pass parameters by reference in Java?
...se, as shown by the following:
Object o = "Hello";
mutate(o)
System.out.println(o);
private void mutate(Object o) { o = "Goodbye"; } //NOT THE SAME o!
Will print Hello to the console. The options if you wanted the above code to print Goodbye are to use an explicit reference as follows:
AtomicRe...