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How do I count unique values inside a list
...hat will ask the user for input and store the values in an array / list.
Then when a blank line is entered it will tell the user how many of those values are unique.
I'm building this for real life reasons and not as a problem set.
...
How to change string into QString?
...::fromStdString(str);
If by string you mean Ascii encoded const char * then you can use this method:
QString QString::fromAscii(const char * str, int size = -1)
const char* str = "Hello world";
QString qstr = QString::fromAscii(str);
If you have const char * encoded with system encoding th...
MySQL SELECT only not null values
...below but I haven't tested this in MySQL.
SELECT CASE idx
WHEN 1 THEN val1
WHEN 2 THEN val2
END AS val
FROM your_table
/*CROSS JOIN*/
JOIN (SELECT 1 AS idx
UNION ALL
SELECT 2) t
HAVING val IS NOT NULL /*Can reference a...
Can't push to GitHub because of large file which I already deleted
...et back X number of commits (for me it was 3): git reset
--soft HEAD~3.
Then recommit all the changes together (AKA squash) git commit -m
"New message for the combined commit"
Push squashed commit.
Special case (from user @lituo): If above doesn't work, then you may have this case. Commit 1 inc...
Remove Project from Android Studio
...project... you have to trick it by moving your mouse over to highlight and then to make sure it sticks use the keyboard arrow keys up/down to highlight the one you want. Then fn+delete to remove it because mac keyboards are retarded.
– Dewey Vozel
Feb 25 '15 at...
List all svn:externals recursively?
...t mean that all external folders have to be at the same depth by the way.) Then you can right-click on your project folder, then Properties..., then the tab Subversion, then Properties... then double-click svn:externals.
sha...
How to highlight cell if value duplicate in same column for google spreadsheet?
...cells will be checked, and if there is a duplicate (occurs more than once) then it'll be coloured.
For locales using comma (,) as a decimal separator, the argument separator is most likely a semi-colon (;). That is, try: =countif(A:A;A1)>1, instead.
For multiple columns, use countifs.
...
Avoiding instanceof in Java
...ike "Hello, I am an Orc. What do you think about me?". Opinionated elf can then judge monsters based on these "greetings", with a code similar to bool visitOrc(Orc orc) { return orc.stench()<threshold; } bool visitFlower(Flower flower) { return flower.colour==magenta; }. The only monster-specific...
Why does the order in which libraries are linked sometimes cause errors in GCC?
...t each other work the same - the library that needs symbols must be first, then the library that resolves the symbol.
If a static library depends on another library, but the other library again depends on the former library, there is a cycle. You can resolve this by enclosing the cyclically depende...
What is memory fragmentation?
...ace. So in my example, if I had virtual memory with a page size of 2 bytes then I could make my 16 byte allocation with no problem. Physical memory would look like this:
----------------------------------
|ffffffffffffffeeeeff |
----------------------------------
whereas virtual memory (...