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Getting “NoSuchMethodError: org.hamcrest.Matcher.describeMismatch” when running test in IntelliJ 10.
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Make sure the hamcrest jar is higher on the import order than your JUnit jar.
JUnit comes with its own org.hamcrest.Matcher class that is probably being used instead.
You can also download and use the junit-dep-4.10.jar instead which is JUnit without the hamcrest classes.
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UPDATE multiple tables in MySQL using LEFT JOIN
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See the article in my blog for performance details:
Finding incomplete orders: performance of LEFT JOIN compared to NOT IN
Unfortunately, MySQL does not allow using the target table in a subquery in an UPDATE statement, that's why you'll need to stick to less efficient LEFT JOIN syntax.
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MySQL: Quick breakdown of the types of joins [duplicate]
...--+------+------+
It makes no difference to INNER JOIN if you reverse the order, because it cares about both tables:
> SELECT * FROM table_b b INNER JOIN table_a a ON a.id=b.aid;
+------+------+------+------+------+
| id | name | aid | id | name |
+------+------+------+------+------+
| 3...
Idiomatic way to convert an InputStream to a String in Scala
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This is potentially an order of magnitude faster than scala.io.Source in Scala 2.11.7. I wrote a really basic benchmark of it and most of the time, it was about 5% faster for large files (test was ~35 MB text file) all the way up to 2,800% faster f...
cannot convert data (type interface {}) to type string: need type assertion
...Even if i is an interface type, []i is not interface type. As a result, in order to convert []i to its value type, we have to do it individually:
// var items []i
for _, item := range items {
value, ok := item.(T)
dosomethingWith(value)
}
Performance
As for performance, it can be slower ...
Haskell Type vs Data Constructor
... data or newtype (e.g. data Bright = Bright Color), or you can use type in order to define a synonym (e.g. type Bright = Color).
– Landei
Dec 16 '14 at 12:59
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MPICH vs OpenMPI
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MPICH supports affinity. wiki.mpich.org/mpich/index.php/…
– Jeff
May 26 '19 at 20:23
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How do I delete a fixed number of rows with sorting in PostgreSQL?
...DELETE FROM logtable
WHERE ctid IN (
SELECT ctid
FROM logtable
ORDER BY timestamp
LIMIT 10
)
The ctid is:
The physical location of the row version within its table. Note that although the ctid can be used to locate the row version very quickly, a row's ctid will change if it is...
Backbone.js: `extend` undefined?
...arification from @tjorriemorrie:
I had underscore, but loaded in the wrong order, first load underscore (guess that is what 'dependency' means :)
Further Clarification just in case this isn't obvious. The order that things are loaded in JavaScript relates to the order the show up on the page. T...
How to delete an item in a list if it exists?
...ing)
The removemethod will remove only the first occurrence of thing, in order to remove all occurrences you can use while instead of if.
while thing in some_list: some_list.remove(thing)
Simple enough, probably my choice.for small lists (can't resist one-liners)
2) Duck-typed, EAFP styl...