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How do you use variables in a simple PostgreSQL script?
... get the last insert id:
DO $$
DECLARE lastid bigint;
BEGIN
INSERT INTO test (name) VALUES ('Test Name')
RETURNING id INTO lastid;
SELECT * FROM test WHERE id = lastid;
END $$;
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imp...
How do you append to an already existing string?
I want append to a string so that every time I loop over it will add say "test" to the string.
7 Answers
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How to convert a string or integer to binary in Ruby?
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I did some local test to convert integers to binary string, but the result shows that codes like 245.to_s(2) will be faster than "%b" % 245
– Green Su
May 13 '14 at 8:58
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Find where java class is loaded from
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Here's an example:
package foo;
public class Test
{
public static void main(String[] args)
{
ClassLoader loader = Test.class.getClassLoader();
System.out.println(loader.getResource("foo/Test.class"));
}
}
This printed out:
file:/C:/Users/J...
What is the difference between require_relative and require in Ruby?
...taining the require_relative statement.
For example, if you have unit test classes in the "test" directory, and data for them under the test "test/data" directory, then you might use a line like this in a test case:
require_relative "data/customer_data_1"
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Using Jasmine to spy on a function without an object
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If you are defining your function:
function test() {};
Then, this is equivalent to:
window.test = function() {} /* (in the browser) */
So spyOn(window, 'test') should work.
If that is not, you should also be able to:
test = jasmine.createSpy();
If none of tho...
Android: Test Push Notification online (Google Cloud Messaging) [closed]
...and in my environment due to some firewall restrictions I can not deploy a test sever for push notification. What I am looking for is a online server which would send some test notifications to my device to test my client implementation.
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How to cast int to enum in C++?
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int i = 1;
Test val = static_cast<Test>(i);
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ab load testing
Can someone please walk me through the process of how I can load test my website using apache bench tool ( ab )?
5 Answer...
In R, how to get an object's name after it is sent to a function?
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The old deparse-substitute trick:
a<-data.frame(x=1:10,y=1:10)
test<-function(z){
mean.x<-mean(z$x)
nm <-deparse(substitute(z))
print(nm)
return(mean.x)}
test(a)
#[1] "a" ... this is the side-effect of the print() call
# ... you could have done something...