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Database, Table and Column Naming Conventions? [closed]
...eg_booking and regadmin_limits).
For fields we'd expect field names to be include the prefix/acryonm of the table (i.e. cust_address1) and we also prefer the use of a standard set of suffixes ( _id for the PK, _cd for "code", _nm for "name", _nb for "number", _dt for "Date").
The name of the Forie...
Most efficient way to store thousand telephone numbers
...ll less than 10^5 in fewer than ceil(log[2](binomial(10^5, 10^3))) = 8073. Including the 17 we need for the first 5 digits, there is still a gap of 10997 - 8090 = 2907 bits. It's an interesting challenge to see if there are better solutions where you can still access the numbers relatively efficient...
Why malloc+memset is slower than calloc?
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Why are private fields private to the type, not the instance?
...hat makes the issue more confusing than it needs to be. Most users (myself included) would find it unneccessarily limiting if the above code didn't work: after all, that's my data I'm trying to access! Why should I have to go through this?
In short, I think I may have overstated the case for it bei...
What is your most productive shortcut with Vim?
...often some motivation to conserve paper).
So the syntax of most : commands includes an address or range of addresses (line number) followed by a command. Naturally one could use literal line numbers: :127,215 s/foo/bar to change the first occurrence of "foo" into "bar" on each line between 127 and ...
Difference between volatile and synchronized in Java
...ry visibility
The first has to do with controlling when code executes (including the order in which instructions are executed) and whether it can execute concurrently, and the second to do with when the effects in memory of what has been done are visible to other threads. Because each CPU has s...
Table fixed header and scrollable body
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What is the difference between Serializable and Externalizable in Java?
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Why were pandas merges in python faster than data.table merges in R in 2012?
...eration for data.table and pandas. Note that plyr and base R merge are not included.
Timings I am presenting are coming from db-benchmark project, a continuously run reproducible benchmark. It upgrades tools to recent versions and re-run benchmark scripts. It runs many other software solutions. If ...
Why C# implements methods as non-virtual by default?
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