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How to darken a background using CSS?
....png);
}
Reference: linear-gradient() - CSS | MDN
UPDATE: Not all browsers support RGBa, so you should have a 'fallback color'. This color will be most likely be solid (fully opaque) ex:background:rgb(96, 96, 96). Refer to this blog for RGBa browser support.
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Should each and every table have a primary key?
... creates a primary key if you didn't specify it explicitly, thus making an extra column you don't have access to.
Note that a primary key can be composite.
If you have a many-to-many link table, you create the primary key on all fields involved in the link. Thus you ensure that you don't have two ...
What is a stack trace, and how can I use it to debug my application errors?
...this, we can open up Book.java and look at line 16, which is:
15 public String getTitle() {
16 System.out.println(title.toString());
17 return title;
18 }
This would indicate that something (probably title) is null in the above code.
Example with a chain of exceptions
Sometimes ap...
How do I do a not equal in Django queryset filtering?
...
Your query appears to have a double negative, you want to exclude all rows where x is not 5, so in other words you want to include all rows where x IS 5. I believe this will do the trick.
results = Model.objects.filter(x=5).exclude(a=true)
To answer your specific question, there is no "...
How to auto-generate a C# class file from a JSON string [closed]
Given the following JSON object,
3 Answers
3
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What do you call the -> operator in Ruby?
...t simply do a drop-in replacement in all cases (because sometimes you need extra parentheses for lambda).
– Kelvin
Mar 15 '17 at 22:16
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How to show all shared libraries used by executables in Linux?
...to know which libraries are used by executables on my system. More specifically, I'd like to rank which libraries are used the most, along with the binaries that use them. How can I do this?
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Best Practices for securing a REST API / web service [closed]
...the caller already knows that credentials are required, Digest requires an extra roundtrip to exchange the nonce value. With Basic, the callers simply sends the credentials the first time.
Once the identity of the client is established, authorization is really just an implementation problem. Howeve...
What is Scala's yield?
...ommand line arguments to uppercase */
object Main {
def main(args: Array[String]) {
val res = for (a <- args) yield a.toUpperCase
println("Arguments: " + res.toString)
}
}
The corresponding expression in F# would be
[ for a in args -> a.toUpperCase ]
or
from a in args select ...
How do you generate dynamic (parameterized) unit tests in python?
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This is called "parametrization".
There are several tools that support this approach. E.g.:
pytest's decorator
parameterized
The resulting code looks like this:
from parameterized import parameterized
class TestSequence(unittes...