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css z-index lost after webkit transform translate3d
...l
In the example, the buttons stack up and stack down raise and lower the footer's z-index (+/-1) against the rotated element (an img in this case).
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@Nullable annotation usage
... or later there is a bit cleaner approach than an if block.
public String foo(@Nullable String mayBeNothing) {
return Optional.ofNullable(mayBeNothing).orElse("Really Nothing");
}
You can also throw some exception in there by swapping .orElse to
orElseThrow(() -> new Exception("Dont' send ...
Best design for a changelog / auditing database table? [closed]
...s:
Who the heck created/updated/deleted a record
with ID=X in the table Foo and when?
So, in order to be able to answer such questions quickly (using SQL), we ended up having two additional columns in the audit table
object type (or table name)
object ID
That's when design of our audit log r...
How to force a web browser NOT to cache images
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Simple fix: Attach a random query string to the image:
<img src="foo.cgi?random=323527528432525.24234" alt="">
What the HTTP RFC says:
Cache-Control: no-cache
But that doesn't work that well :)
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How to avoid the “divide by zero” error in SQL?
...ught it would be an error). So... I went with the following: ISNULL( (SUM(foo) / NULLIF(SUM(bar),0) ), 0) AS Avg
– Andrew Steitz
Mar 1 '13 at 20:45
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Turn a string into a valid filename?
... use list comprehension together with the string methods.
>>> s
'foo-bar#baz?qux@127/\\9]'
>>> "".join(x for x in s if x.isalnum())
'foobarbazqux1279'
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How can I check if a Perl array contains a particular value?
...ine array doing below, will work as above.
if ( $var ~~ ['bar', 'value', 'foo'] )
In Perl 5.18 smartmatch is flagged as experimental therefore you need to turn off the warnings by turning on experimental pragma by adding below to your script/module:
use experimental 'smartmatch';
Alternativel...
How can I remove the string “\n” from within a Ruby string?
... use String#delete (or its mutator equivalent String#delete!), e.g.:
x = "foo\nfoo"
x.delete!("\n")
x now equals "foofoo"
In this specific case String#delete is more readable than gsub since you are not actually replacing the string with anything.
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How do you pass custom environment variable on Amazon Elastic Beanstalk (AWS EBS)?
...I to set environment variables.
To set an environment variable: eb setenv FOO=bar
To view the environment variables: eb printenv
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How do you create a REST client for Java? [closed]
...st:8080");
// lets get the XML as a String
String text = resource("foo").accept("application/xml").get(String.class);
BTW I hope that future version of JAX-RS add a nice client side API along the lines of the one in Jersey
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