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When NOT to use Cassandra?
..., a Cassandra clone called Scylla (see https://en.wikipedia.org/wiki/Scylla_(database)) was released. Scylla is an open-source re-implementation of Cassandra in C++, which claims to have significantly higher throughput and lower latencies than the original Java Cassandra, while being mostly compatib...
Example for sync.WaitGroup correct?
...fmt.Println("Done")
}
As a playground: http://play.golang.org/p/WZcprjpHa_
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WCF timeout exception detailed investigation
...
from: http://www.codeproject.com/KB/WCF/WCF_Operation_Timeout_.aspx
To avoid this timeout error, we need
to configure the OperationTimeout
property for Proxy in the WCF client
code. This configuration is something
new unlike other configurations such
as ...
What does the explicit keyword mean?
...eter constructor, can be used as an implicit conversion
Foo (int foo) : m_foo (foo)
{
}
int GetFoo () { return m_foo; }
private:
int m_foo;
};
Here's a simple function that takes a Foo object:
void DoBar (Foo foo)
{
int i = foo.GetFoo ();
}
and here's where the DoBar function is cal...
PostgreSQL naming conventions
...valent convention is:
SQL keywords: UPPER CASE
names (identifiers): lower_case_with_underscores
For example:
UPDATE my_table SET name = 5;
This is not written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgresql treats identifiers case insensitively whe...
What is the difference between MOV and LEA?
...ere:
http://www.oopweb.com/Assembly/Documents/ArtOfAssembly/Volume/Chapter_6/CH06-1.html#HEADING1-136
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What is the ellipsis (…) for in this method signature?
...hRecipientJids(jid1, jid2);
msgBuilder2.withRecipientJids(jid1, jid2, jid78_a, someOtherJid);
See more here:
http://java.sun.com/j2se/1.5.0/docs/guide/language/varargs.html
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What is the difference between self-types and trait subclasses?
...ection 2.3 also says this: “Each of the operands of a mixin composition C_0 with ... with C_n, must refer to a class. The mixin composition mechanism does not allow any C_i to refer to an abstract type. This restriction makes it possible to statically check for ambiguities and override conflicts a...
Generate a random double in a range
...y correct, but beware of its limits. If you do double rangeMax= Double.MAX_VALUE; and double rangeMin= -rangeMax; you will always get an infinite value in return. You might want to check for Double.valueOf(rangeMax-rangeMin).isInfinite().
– lre
Apr 7 '14 at 1...
How do I match any character across multiple lines in a regular expression?
... default. Boost's ECMAScript grammar allows you to turn this off with regex_constants::no_mod_m (source).
As for oracle (it is POSIX based), use n option (demo): select regexp_substr('abcde' || chr(10) ||' fghij<Foobar>', '(.*)<Foobar>', 1, 1, 'n', 1) as results from dual
POSIX-bas...