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What is a NullPointerException, and how do I fix it?
... if it was a real reference. For example, if you write this:
public class Test {
public static void main(String[] args) {
String foo = null;
int length = foo.length(); // HERE
}
}
the statement labeled "HERE" is going to attempt to run the length() method on a null refer...
How do I add a new sourceset to Gradle?
I want to add integration tests to my Gradle build (Version 1.0). They should run separately from my normal tests because they require a webapp to be deployed to localhost (they test that webapp). The tests should be able to use classes defined in my main source set. How do I make this happen?
...
Select datatype of the field in postgres
... data_type
end as myType
from information_schema.columns
where table_name='test'
with result:
column_name | myType
-------------+-------------------
test_id | test_domain
test_vc | varchar(15)
test_n | numeric(15,3)
big_n | bigint
ip_addr | inet
...
Skip callbacks on Factory Girl and Rspec
I'm testing a model with an after create callback that I'd like to run only on some occasions while testing. How can I skip/run callbacks from a factory?
...
How to test equality of Swift enums with associated values
I want to test the equality of two Swift enum values. For example:
13 Answers
13
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Why doesn't Mockito mock static methods?
...nd have necessary abstractions so you can focus on the important pieces. A testing library is a tool - a tool I use to produce better quality, and hopefully better designed, code. What's the point of a testing/mock library when it has limitations that may mean I can't use it when I'm having to integ...
'Incomplete final line' warning when trying to read a .csv file into R
...t's impossible to recreate the error you get.
> Data <- read.table("test.csv",header=T,sep=",")
> Data <- read.table("test.xlsx",header=T,sep=",")
Warning message:
In read.table("test.xlsx", header = T, sep = ",") :
incomplete final line found by readTableHeader on 'test.xlsx'
readT...
Return number of rows affected by UPDATE statements
...in SQL Server 2005 onwards is excellent for.
EXAMPLE
CREATE TABLE [dbo].[test_table](
[LockId] [int] IDENTITY(1,1) NOT NULL,
[StartTime] [datetime] NULL,
[EndTime] [datetime] NULL,
PRIMARY KEY CLUSTERED
(
[LockId] ASC
) ON [PRIMARY]
) ON [PRIMARY]
INSERT INTO test_table(StartTime...
Are loops really faster in reverse?
...pt loops really faster when counting backward? If so, why? I've seen a few test suite examples showing that reversed loops are quicker, but I can't find any explanation as to why!
...
Does anyone have benchmarks (code & results) comparing performance of Android apps written in Xamari
...al machine is more impressive than Google's Dalvik used in Android. I have tested it with HTC Flyer and Acer Iconia Tab tablets to benchmark the C# port of Android through Mono against Java Dalvik, with the C# implementation of Android well and truly trouncing the Java-based Dalvik.
...