大约有 15,462 项符合查询结果（耗时：0.0275秒） [XML]
Task not serializable: java.io.NotSerializableException when calling function outside closure only o
...ens in your second case is that you are calling a method, defined in class testing from inside the map function. Spark sees that and since methods cannot be serialized on their own, Spark tries to serialize the whole testing class, so that the code will still work when executed in another JVM. You h...
How to write a test which expects an Error to be thrown in Jasmine?
I'm trying to write a test for the Jasmine Test Framework which expects an error. At the moment I'm using a Jasmine Node.js integration from GitHub .
...
How do I create a slug in Django?
...;
You can call slugify automatically by overriding the save method:
class Test(models.Model):
q = models.CharField(max_length=30)
s = models.SlugField()
def save(self, *args, **kwargs):
self.s = slugify(self.q)
super(Test, self).save(*args, **kwargs)
Be aware that ...
Detect blocked popup in Chrome
...rowsers (as described in the answer to this question ). Here's the basic test:
16 Answers
...
Selecting element by data attribute
...nd want more general rules about selecting with data-attributes:
$("[data-test]") will select any element that merely has the data attribute (no matter the value of the attribute). Including:
<div data-test=value>attributes with values</div>
<div data-test>attributes without val...
How can I test if a letter in a string is uppercase or lowercase using JavaScript?
How can I test if a letter in a string is uppercase or lowercase using JavaScript?
28 Answers
...
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
...
jquery data selector
...ailable operators in the code below. Amongst them is ~= which allows regex testing:
$('a:data(category~=^mus..$,artist.name~=^M.+a$)');
I've tested it with a few variations and it seems to work quite well. I'll probably add this as a Github repo soon (with a full test suite), so keep a look out!
...
Best way to check for “empty or null value”
...char(5) AS eq3;
Result:
eq1 | eq2 | eq3
----+-----+----
t | t | t
Test for "null or empty string" with char(n):
SELECT stringexpression
, stringexpression = '' AS base_test
, (stringexpression = '') IS NOT FALSE AS test1
, (stringexpression <> '') ...
How to check if an element does NOT have a specific class?
...sn't a class. For example, I know how to check to see if it has the class "test", but how do I check to see if it doesn't have the class "test"?
...