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What are all the uses of an underscore in Scala?
...tten!
Example showing why foo(_) and foo _ are different:
This example comes from 0__:
trait PlaceholderExample {
def process[A](f: A => Unit)
val set: Set[_ => Unit]
set.foreach(process _) // Error
set.foreach(process(_)) // No Error
}
In the first case, process _ represents...
Converting a Java collection into a Scala collection
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How to change the status bar color in Android?
...is is supported on device pre-lollipop thanks to the library support-v7-appcompat starting from version 21. Blogpost about support appcompat v21 from Chris Banes
Read more about the Material Theme on the official Android Developers website
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Redis key naming conventions?
...er this example:
We have an RESTful API for toy objects. There is a one:
http://example.com/api/toy/234
Where we have it stored? We use Redis and slashes so the key is obvious:
toy/234
This is the unique key for the toy. The key can now be used also on client side:
{
key: "toy/234",
...
Symbolicating iPhone App Crash Reports
...ER.
OPEN terminal application and go to the folder created above (using cd command)
Run atos -arch armv7 -o APPNAME.app/APPNAME MEMORY_LOCATION_OF_CRASH. The memory location should be the one at which the app crashed as per the report.
Ex: atos -arch armv7 -o 'APPNAME.app'/'APPNAME' 0x0003b508
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Android ClassNotFoundException: Didn't find class on path
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i comment this to remember next time to "update" sdk, watch this answer
– Enrique San Martín
Dec 18 '14 at 15:47
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how to convert array values from string to int?
returns
14 Answers
14
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How to convert object array to string array in Java
...an, the issue is that objectArray contains Objects not Strings (see mmyers comment to my answer which suffers from the same problem).
– Yishai
Jul 2 '10 at 15:40
3
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Where are my postgres *.conf files?
I have recently reinstalled postgresql 8.3 on my Ubuntu 8.04 after update. Used EnterpriseDB package. I can connect to the database locally, I see system DB postgres but I can't configure it because I can't find config files. Searched through entire hard drive and found only samples like pg_hba.con...
curl json post request via terminal to a rails app
...ail@email.com","password":"app123","password_confirmation":"app123"}}' \
http://localhost:3000/api/1/users
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