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How to create a HashMap with two keys (Key-Pair, Value)?
...n result;
}
}
Implementing equals() and hashCode() is crucial here. Then you simply use:
Map<Key, V> map = //...
and:
map.get(new Key(2, 5));
Table from Guava
Table<Integer, Integer, V> table = HashBasedTable.create();
//...
table.get(2, 5);
Table uses map of maps undern...
TransactionManagementError “You can't execute queries until the end of the 'atomic' block” while usi
... best for me as I was trying to test for integrityerror will be raised and then subsequently I needed to run more database save queries
– Kim Stacks
Oct 9 '18 at 1:40
add a co...
Regular expression to match a line that doesn't contain a word
I know it's possible to match a word and then reverse the matches using other tools (e.g. grep -v ). However, is it possible to match lines that do not contain a specific word, e.g. hede , using a regular expression?
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How to write a:hover in inline CSS?
...ed;" is the switch colour on hover, put the colour you need into there and then this solution works. I realise this may not be the perfect solution in terms of compatibility however this works if it is absolutely needed.
sha...
What's an appropriate HTTP status code to return by a REST API service for a validation failure?
..."validation failure" means that there is some client error in the request, then use HTTP 400 (Bad Request). For instance if the URI is supposed to have an ISO-8601 date and you find that it's in the wrong format or refers to February 31st, then you would return an HTTP 400. Ditto if you expect wel...
PHP ORMs: Doctrine vs. Propel
...pel, but you must consider that Propel was indeed the first ORM available, then lagged a bit when Doctrine got created, but now has active development again. Symfony 1.3/1.4 comes with Propel 1.4, where most comparisons stop at Propel 1.3. Also, the next release of Propel (1.5) will contain a lot of...
How do I create a crontab through a script
...for you to do is probably just create a text file with the job configured, then copy it to the cron spool folder and make sure it has the right permissions (600).
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Get all unique values in a JavaScript array (remove duplicates)
...bjects that contain the same values. If you write let o = {Foo:"Bar"}; and then create a set with two references like so: let s2 = new Set([o,o]);, then s2 will be Set { { Foo: 'Bar' } }
– mortb
Apr 5 '17 at 9:14
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Android Fragment lifecycle over orientation changes
...ple fragments, you should give them tags when adding to the container, and then use mFragmentManager.findFragmentByTag (instead of findFragmentById) to get references to them - this way you will know the class of each fragment and be able to cast correctly
– k29
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How to add custom method to Spring Data JPA
...inder functionality working by default and if I want to customize a finder then that can be also done easily in the interface itself.
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