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Round a double to 2 decimal places [duplicate]
...conds for logging purposes: 27.987654321987 -> 27.99). But I guess it's best to avoid it, since more reliable ways are readily available, with cleaner code too.
So, use this instead
(Adapted from this answer by Louis Wasserman and this one by Sean Owen.)
public static double round(double valu...
Using Html.ActionLink to call action on different controller
...utes
<%=Html.ActionLink("Details", "Details",
"Product", new {id = item.ID}, null) %>
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Does Swift have documentation generation support?
...ts.
Updates
Xcode 7 beta 4 ~ Added "- Throws: ..." as a top-level list item which appears alongside parameters and return descriptions in Quick Help.
Xcode 7 beta 1 ~ Some significant changes to syntax with Swift 2 - documentation comments now based on Markdown (same as playgrounds).
Xcode 6.3...
How to count number of files in each directory?
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By far the best (and most elegant) solution if one wants to list the number of files in top level directories recursively.
– itoctopus
Apr 29 '17 at 13:41
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How to randomly pick an element from an array
...nce.
import java.util.Random;
public class RandArray {
private int[] items = new int[]{1,2,3};
private Random rand = new Random();
public int getRandArrayElement(){
return items[rand.nextInt(items.length)];
}
}
If you are picking random array elements that need to be un...
Select 50 items from list at random to write to file
...
One easy way to select random items is to shuffle then slice.
import random
a = [1,2,3,4,5,6,7,8,9]
random.shuffle(a)
print a[:4] # prints 4 random variables
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JavaScript: How to pass object by value?
...ere are no functions and date objects, the JSON.parse solution seems to be best. stackoverflow.com/questions/122102/…
– Herr_Hansen
Apr 14 '16 at 12:08
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How to “perfectly” override a dict?
...te(dict(*args, **kwargs)) # use the free update to set keys
def __getitem__(self, key):
return self.store[self.__keytransform__(key)]
def __setitem__(self, key, value):
self.store[self.__keytransform__(key)] = value
def __delitem__(self, key):
del self.store[s...
How to add a button to UINavigationBar?
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Sample code to set the rightbutton on a NavigationBar.
UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:UIBarButtonItemStyleDone target:nil action:nil];
UINavigationItem *item = [[UINavigationItem alloc] initWithTitle:@"Title"];
item.rightBarButtonIte...
What does -save-dev mean in npm install grunt --save-dev
...ered Feb 13 '15 at 23:21
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