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How do you compare structs for equality in C?
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if the 2 structures variable are initialied with calloc or they are set with 0 by memset so you can compare your 2 structures with memcmp and there is no worry about structure garbage and this will allow you to earn time
– MOHAMED
Oct 3...
Number of rows affected by an UPDATE in PL/SQL
...ut how many rows were affected by the UPDATE? When executing the query manually it tells me how many rows were affected, I want to get that number in PL/SQL.
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Pry: show me the stack
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Use the pry-stack_explorer plugin, it allows you to move up and down the call-stack (with up and down), display the callstack (with show-stack), and so on:
see here:
Frame number: 0/64
From: /Users/johnmair/ruby/rails_projects/personal_site/app/controllers/pos...
Rebuild IntelliJ project indexes
IntelliJ IDEA 10.5.1 is reporting zero usages for all method, classes etc.
2 Answers
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Which timestamp type should I choose in a PostgreSQL database?
...ative TIMESTAMPs.
From a programmatic and consistency perspective, ensure all calculations are made using UTC as the time zone. This isn’t a PostgreSQL requirement, but it helps when integrating with other programming languages or environments. Setting a CHECK on the column to make sure the writ...
T-SQL: Opposite to string concatenation - how to split string into multiple records [duplicate]
...s(pn, start, stop) AS (
SELECT 1, 1, CHARINDEX(@sep, @s)
UNION ALL
SELECT pn + 1, stop + 1, CHARINDEX(@sep, @s, stop + 1)
FROM Pieces
WHERE stop > 0
)
SELECT pn,
SUBSTRING(@s, start, CASE WHEN stop > 0 THEN stop-start ELSE 512 END) AS s
FROM Piec...
Can we set a Git default to fetch all tags during a remote pull?
...that are downloaded from the
remote repository are fetched and stored locally.
If that default statement is not a restriction, then you can also try
git pull --force
share
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improve this answ...
Removing multiple classes (jQuery)
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There are many ways can do that!
jQuery
remove all class
$("element").removeClass();
OR
$("#item").removeAttr('class');
OR
$("#item").attr('class', '');
OR
$('#item')[0].className = '';
remove multi class
$("element").removeClass("class1 ... classn");
OR
$("element").re...
What is the advantage to using bloom filters?
...t least the
data items themselves, which can
require anywhere from a small number
of bits, for small integers, to an
arbitrary number of bits, such as for
strings (tries are an exception, since
they can share storage between
elements with equal prefixes). Linked
structures incur an a...
Ignoring time zones altogether in Rails and PostgreSQL
...time zone.
timestamptz is the preferred type in the date/time family, literally. It has typispreferred set in pg_type, which can be relevant:
Generating time series between two dates in PostgreSQL
Internal storage and epoch
Internally, timestamps occupy 8 bytes of storage on disk and in RAM. It is...