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Deleting all rows from Cassandra cql table [duplicate]
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To remove all rows from a CQL Table, you can use the TRUNCATE command:
TRUNCATE keyspace_name.table_name;
Or if you are already using the keyspace that contains your target table:
TRUNCATE table_name;
Important to note, but by default Cas...
Are Java static calls more or less expensive than non-static calls?
... to say "premature opimisation is the root of all evil" I'd get 1000 votes from people who know as much about performance as the parrot.
– rghome
Jan 28 '19 at 14:54
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No serializer found for class org.hibernate.proxy.pojo.javassist.Javassist?
...ed in previous answers, lazy loading means that when you fetch your object from the database, the nested objects are not fetched (and may be fetched later when required).
Now Jackson tries to serialize the nested object (== make JSON out of it), but fails as it finds JavassistLazyInitializer instea...
Difference between solr and lucene
... plain Lucene as it's easy to use. However, they never restrain themselves from customizing Solr to the maximum extent.
BTW, I see that there are more resources on Solr (4.x) than Lucene (4.x).
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How does the getView() method work when creating your own custom adapter?
...outInflater takes your layout XML-files and creates different View-objects from its contents.
2: The adapters are built to reuse Views, when a View is scrolled so that is no longer visible, it can be used for one of the new Views appearing. This reused View is the convertView. If this is null it ...
How to not run an example using roxygen2?
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Judging from the topic title, the question is about roxygen2 syntax and not about .Rd syntax?
– Jeroen
Apr 1 '13 at 21:54
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How is an HTTP POST request made in node.js?
...require('fs');
function PostCode(codestring) {
// Build the post string from an object
var post_data = querystring.stringify({
'compilation_level' : 'ADVANCED_OPTIMIZATIONS',
'output_format': 'json',
'output_info': 'compiled_code',
'warning_level' : 'QUIET',
'j...
How to add a Timeout to Console.ReadLine()?
...I'm surprised to learn that after 5 years, all of the answers still suffer from one or more of the following problems:
A function other than ReadLine is used, causing loss of functionality. (Delete/backspace/up-key for previous input).
Function behaves badly when invoked multiple times (spawning m...
Why implement interface explicitly?
...leaner code: there will be a compiler error if the Clone method is removed from ICloneable, however if you implement the method implicitly you can end up with unused 'orphaned' public methods
strong typing:
To illustrate supercat's story with an example, this would be my preferred sample code, impl...
How to get a user's client IP address in ASP.NET?
...nsure that traffic is routed to each device correctly. For users accessing from an office environment the address may well be the same for all users. Sites that use IP address for ID run the risk of getting it very wrong - the examples you give are good ones and they often fail. For example my offic...