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How to check if command line tools is installed
I have a macbook pro with OS X 10.8.2.
XCode is installed. I know this as it appears in the Applications directory.
There are also the xcodebuild and xcode-select files in /usr/bin
I need to know if the command line tools is installed.
Is there a command for it?
What can I do to see if XCode CLT is ...
DISTINCT for only one column
... SELECT ID,
Email,
ProductName,
ProductModel,
ROW_NUMBER() OVER(PARTITION BY Email ORDER BY ID DESC) rn
FROM Products
) a
WHERE rn = 1
EDIT:
Example using a wh...
'const int' vs. 'int const' as function parameters in C++ and C
...s a pointer to an int that cannot be changed to point to another int.
See https://isocpp.org/wiki/faq/const-correctness#const-ptr-vs-ptr-const.
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Algorithm to calculate the number of divisors of a given number
What would be the most optimal algorithm (performance-wise) to calculate the number of divisors of a given number?
27 Answe...
Android: Share plain text using intent (to all messaging apps)
...re.*/
String shareBody = "Here is the share content body";
/*The type of the content is text, obviously.*/
intent.setType("text/plain");
/*Applying information Subject and Body.*/
intent.putExtra(android.content.Intent.EXTRA_SUBJECT, getString(R.string.share_subject));
intent...
Uniq by object attribute in Ruby
...most elegant way to select out objects in an array that are unique with respect to one or more attributes?
14 Answers
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How to reference generic classes and methods in xml documentation
...rks of course. But how do you reference a class or a method with generic types?
7 Answers
...
What is the main difference between Inheritance and Polymorphism?
I was presented with this question in an end of module open book exam today and found myself lost. I was reading Head first Java and both definitions seemed to be exactly the same. I was just wondering what the MAIN difference was for my own piece of mind. I know there are a number of similar quest...
LINQ - Full Outer Join
I have a list of people's ID and their first name, and a list of people's ID and their surname. Some people don't have a first name and some don't have a surname; I'd like to do a full outer join on the two lists.
...
How do I copy to the clipboard in JavaScript?
...he clipboard directly from a variable.
Only supported on pages served over HTTPS.
In Chrome 66 pages in active tabs can write to the clipboard without a permissions prompt.
document.execCommand('copy')
Most browsers support this as of ~April 2015 (see Browser Support below).
Access is synchronous...