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How to add texture to fill colors in ggplot2
...: make the border on one bar darker than the others using R
EDIT: I've finally found time to give a brief example of this hack that allows at least 3 types of basic pattern in ggplot2. The code:
Example.Data<- data.frame(matrix(vector(), 0, 3, dimnames=list(c(), c("Value", "Variable", "Fill")))...
How can I return to a parent activity correctly?
...ent to it.
Therefore, the system is forced to recreate activity A (i.e. calling onCreate) even if the task stack is handled correctly.
To fix this problem you need to change the manifest, adding the following attribute to the A activity declaration:
android:launchMode="singleTop"
Note: calling...
How to get the current date and time
...e();
In the words of the Javadocs for the zero-argument constructor:
Allocates a Date object and initializes it so that it represents the time at which it was allocated, measured to the nearest millisecond.
Make sure you're using java.util.Date and not java.sql.Date -- the latter doesn't hav...
HashMap with multiple values under the same key
... to this approach is that you have to write a lot of boiler-plate code for all of these very simple container classes.
3. Using a tuple
// you'll have to write or download a Tuple class in Java, (.NET ships with one)
// create our map
Map<String, Tuple2<Person, Person> peopleByForename =...
Thread vs ThreadPool
...rom the pool rather than one I've explicitly created? I'm thinking specifically of .NET here, but general examples are fine.
...
Can't create handler inside thread that has not called Looper.prepare()
...
You're calling it from a worker thread. You need to call Toast.makeText() (and most other functions dealing with the UI) from within the main thread. You could use a handler, for example.
Look up Communicating with the UI Thread in ...
Favorite (Clever) Defensive Programming Best Practices [closed]
...in favor of Test Driven Development. If you catch errors quickly and externally, you don't need to muddy-up your code with defensive maneuvers, your code is DRY-er and you wind-up with fewer errors that you have to defend against.
As WikiKnowledge Wrote:
Avoid Defensive Programming, Fail Fast ...
How to implement history.back() in angular.js
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This code is untestable, you should really use the '$window' object instead of 'window.'
– Arbiter
Apr 25 '13 at 18:19
...
How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
...
Assuming you've used home-brew to install and upgrade Postgres, you can perform the following steps.
Stop current Postgres server:
launchctl unload ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
Initialize a new 10.1 database:
initdb /usr/local/var/pos...
Set ImageView width and height programmatically?
How can I set an ImageView 's width and height programmatically?
14 Answers
14
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