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How to join strings in Elixir?
How do I join two strings in a list with a space, like:
9 Answers
9
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Matplotlib tight_layout() doesn't take into account figure suptitle
...=24)
# Instead, do a hack by annotating the first axes with the desired
# string and set the positioning to 'figure fraction'.
fig.get_axes()[0].annotate('Long Suptitle', (0.5, 0.95),
xycoords='figure fraction', ha='center',
fontsize=24
...
Red black tree over avl tree
...ack tree.
AVL trees store the balance factor at each node. This takes O(N) extra space. However, if we know that the keys that will be inserted in the tree will always be greater than zero, we can use the sign bit of the keys to store the colour information of a red-black tree. Thus, in such cases r...
Should Javadoc comments be added to the implementation?
...m during my PhD and found that in general folks will never be aware of the extra information in the overriding version if they are invoking through a supertype.
Addressing this problem was one of the major feature of the prototype tool that I built - Whenever you invoked a method, you got an indic...
Can an int be null in Java?
...
A great way to find out:
public static void main(String args[]) {
int i = null;
}
Try to compile.
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Loading a properties file from Java package
...e directory which represents the package the class is in.
Using java.lang.String.class.getResource("foo.txt") would search for the (inexistent) file /java/lang/String/foo.txt on the classpath.
Using an absolute path (one that starts with '/') means that the current package is ignored.
...
ActiveRecord: size vs count
...many association, size will use the cached count directly, and not make an extra query at all.
class Image < ActiveRecord::Base
belongs_to :product, counter_cache: true
end
class Product < ActiveRecord::Base
has_many :images
end
> product = Product.first # query, load product into m...
How to present a simple alert message in java?
...ity" you can always wrap your code in a short method:
private void msgbox(String s){
JOptionPane.showMessageDialog(null, s);
}
and the usage:
msgbox("don't touch that!");
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how to convert milliseconds to date format in android?
...dar;
public class Test {
/**
* Main Method
*/
public static void main(String[] args) {
System.out.println(getDate(82233213123L, "dd/MM/yyyy hh:mm:ss.SSS"));
}
/**
* Return date in specified format.
* @param milliSeconds Date in milliseconds
* @param dateFormat Date format
* @return S...
Design patterns or best practices for shell scripts [closed]
... values. This means that you have to invent a different strategy to return string values. My strategy is to use a variable called RESULT to store the result, and returning 0 if the function completed cleanly.
Also, you can raise exceptions if you are returning a value different from zero, and then ...