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Builder Pattern in Effective Java
...ium;
this.fat = b.fat;
this.carbo = b.carbo;
}
}
And now you can set the properties as follows:
NutritionalFacts n = new NutritionalFacts.Builder().sodium(10).carbo(15).
fat(5).build();
share
...
`from … import` vs `import .` [duplicate]
...e.
This makes all names from the module available in the local namespace.
Now let's see what happens when we do import X.Y:
>>> import sys
>>> import os.path
Check sys.modules with name os and os.path:
>>> sys.modules['os']
<module 'os' from '/System/Library/Framework...
Change key pair for ec2 instance
...ould do the trick for #5. And don't forget step 13. is probably rm ~/.ssh/known_hosts on boxes you've been connecting from.
– brandonscript
Apr 9 '14 at 6:38
...
How do I check out a specific version of a submodule using 'git submodule'?
...v2.0
Previous HEAD position was 5c1277e... bumped version to 2.0.5
HEAD is now at f0a0036... version 2.0
git-status on the parent repository will now report a dirty tree:
# On branch dev [...]
#
# modified: submodule (new commits)
Add the submodule directory and commit to store the new po...
How to take screenshot with Selenium WebDriver
Does anyone know if it's possible to take a screenshot using Selenium WebDriver? (Note: Not Selenium RC)
45 Answers
...
Is there more to an interface than having the correct methods
...such as sort() or reverse() for List. The point here is that this code can now be used to sort or reverse any class that implements the List interfaces - not just ArrayList and LinkedList, but also classes that you write yourself, which may be implemented in a way the people who wrote java.util.Coll...
C# Object Pooling Pattern implementation
...This question is a little trickier than one might expect due to several unknowns: The behaviour of the resource being pooled, the expected/required lifetime of objects, the real reason that the pool is required, etc. Typically pools are special-purpose - thread pools, connection pools, etc. - becau...
How do you delete a column by name in data.table?
...hough data.table is gradually moving away from using this argument so it's now discouraged where you can avoid it; showing here so you know the option exists in case you really do need it:
# Method 5a (like Method 3)
df3[, !"foo", with=FALSE]
# Method 5b (like Method 4)
df3[, !grep("^foo$", names(...
Which @NotNull Java annotation should I use?
...
package javax.annotation;
@TypeQualifierNickname
@Nonnull(when = When.UNKNOWN)
@Retention(RUNTIME)
public @interface Nullable {}
package org.checkerframework.checker.nullness.qual;
@Retention(RUNTIME)
@Target({TYPE_USE, TYPE_PARAMETER})
@SubtypeOf({})
@ImplicitFor(
literals = {LiteralKind....
How to add extension methods to Enums
...ve days")]
Week,
[Description("Twenty-one days")]
Month
}
Now you want to be able to do something like:
Duration duration = Duration.Week;
var description = duration.GetDescription(); // will return "Five days"
Your extension method GetDescription() can be written as follows:
us...