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How do you find the sum of all the numbers in an array in Java?
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You can't. Other languages have some methods for this like array_sum() in PHP, but Java doesn't.
Just..
int[] numbers = {1,2,3,4};
int sum = 0;
for( int i : numbers) {
sum += i;
}
System.out.println(sum);
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Select by partial string from a pandas DataFrame
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df[df['value'].astype(str).str.contains('1234.+')] for filtering out non-string-type columns.
– François Leblanc
Feb 13 '18 at 20:22
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Extract elements of list at odd positions
...it be enumerate(L) instead of enumerate(items) ?
– ab123
May 24 '18 at 5:38
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How do you clear a slice in Go?
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123
It all depends on what is your definition of 'clear'. One of the valid ones certainly is:
sli...
Error: Jump to case label
...in the { }
dostuff(i);
break;
}
case 2:
dostuff(123); // Now you cannot use i accidentally
}
Edit
To further elaborate, switch statements are just a particularly fancy kind of a goto. Here's an analoguous piece of code exhibiting the same issue but using a goto instead ...
How do you unit test private methods?
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123
If you are using .net, you should use the InternalsVisibleToAttribute.
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What is the purpose of backbone.js?
...h the learning curve associated with a framework. If you're still building PHP, Java, or something else sites where the back end server is still doing all the heavy lifting of building the web pages upon request by the user and JavaScript/jQuery is just icing upon that process, you aren't going to n...
Unknown column in 'field list' error on MySQL Update query
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Thank you. I was trying to figure out why my query in PHP was not working, all I had to do was add the single quotes.
– RiCHiE
Jul 2 '16 at 5:12
1
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ImportError: No module named pip
...via 'sudo apt-get install python-pip'. These versioning changes (i.e. like php with homebrew) drive me crazy sometimes...
– Ryan Coolwebs
Dec 12 '18 at 2:58
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How to make phpstorm display line numbers by default?
How to make phpstorm display line numbers by default?
Couldn't find that option. It's kind of annoying to turn them on manually for each page.
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