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Coding Practices which enable the compiler/optimizer to make a faster program
...e of loops
If a calculation or variable value does not depend on the loop index, move it outside (before) the loop.
I/O in blocks
Read and write data in large chunks (blocks). The bigger the better. For example, reading one octect at a time is less efficient than reading 1024 octets with one re...
Switch statement fallthrough in C#?
...e takes a value, computes an offset from it (whether by looking up a table indexed by a perfect hash of the value, or by actual arithmetic on the value*). It's worth noting at this point that today, C# compilation will sometimes turn switch into the equivalent if-else, and sometimes use a hash-based...
Which cryptographic hash function should I choose?
...asswords, or for challenge-response auth, or for access tokens, or just to index a bunch of strings/files. Performance, on the other hand, is a concern for the OP...
– Seva Alekseyev
May 23 '19 at 17:33
...
How does LMAX's disruptor pattern work?
...r are examined in order from the one respective to the consumerCallId (the index is determined in the same manner as for producers), to the one respective to the recent producerCallId.
They are examined in a loop by comparing the flag value written in the flag array, against a flag value generated ...
Patterns for handling batch operations in REST web services?
...5.13. [...]
The queue maintains two arrays. queued
is a numerically indexed array, to
which new updates are appended. sent
is an associative array, containing
those updates that have been sent to
the server but that are awaiting a
reply.
Here are two pertinent functions -- one res...
Foreign Key to non-primary key
...r table.
And there is no way to set a foreign key to a non-unique column/index, e.g. in T_ZO_REM_AP_Raum_Reinigung (WHERE RM_UID is actually RM_ApertureID).
But to prohibit invalid values, you need to set a foreign key, otherwise, data-garbage is the result sooner rather than later...
Now what...
How should you build your database from source control?
...rsion controlled?
Just code (procedures, packages, triggers, java, etc)?
Indexes?
Constraints?
Table Definitions?
Table Change Scripts? (eg. ALTER scripts)
Everything?
Everything, and:
Do not forget static data (lookup lists etc), so you do not need to copy ANY data between environments
Keep onl...
CSS selector for first element with class
...ySelector('.home > .red');
Or use document.querySelectorAll() with an indexer to pick any specific match:
var redElements = document.querySelectorAll('.home > .red');
var first = redElements[0];
var second = redElements[1];
// etc
Although the .red:nth-of-type(1) solution in the origina...
How to implement has_many :through relationships with Mongoid and mongodb?
...0, @total=0.0>
I am using just 250 appointments.
Don't forget to add indexes to :patient_id and :physician_id in Appointment document!
I hope it helps,
Thanks for reading!
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How to create a custom attribute in C#
... Not sure why this is the accepted answer. The actual question (which is indexed in Google, as well) is "How to create a custom attribute in C#". The answers does not at all delve into that topic. The 2nd answer does, on the other hand.
– Drakestar
Jul 16 '17...