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In Vim, how do I apply a macro to a set of lines?
...ual selection or by a :40,50 / :+10
See http://www.vim.org/scripts/script.php?script_id=3271
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Database development mistakes made by application developers [closed]
...vely easy one but still it happens all the time. Foreign keys should have indexes on them. If you're using a field in a WHERE you should (probably) have an index on it. Such indexes should often cover multiple columns based on the queries you need to execute.
2. Not enforcing referential integri...
MySQL “WITH” clause
...BM DB2 UDB 8 and later:
http://publib.boulder.ibm.com/infocenter/db2luw/v8/index.jsp?topic=/com.ibm.db2.udb.doc/admin/r0000879.htm
PostgreSQL 8.4 and later:
https://www.postgresql.org/docs/current/static/queries-with.html
Sybase 11 and later:
http://dcx.sybase.com/1100/en/dbusage_en11/commontblexpr-...
MySQL ON DUPLICATE KEY - last insert id?
...he table
has the same value as a new row for a
PRIMARY KEY or a UNIQUE index, the old
row is deleted before the new row is
inserted.
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Using semicolon (;) vs plus (+) with exec in find
...ind . -name 'test*' -exec echo {} \;
./test.c
./test.cpp
./test.new
./test.php
./test.py
./test.sh
With a plus, the command echo is called once only. Every file found is passed in as an argument.
$ find . -name 'test*' -exec echo {} \+
./test.c ./test.cpp ./test.new ./test.php ./test.py ./test.s...
Position icons into circle
...HTML starting from an array of images. Whether the HTML is generated using PHP, JS, some HTML preprocessor, whatever... this matters less as the basic idea behind is the same.
Here's the Pug code that would do this:
//- start with an array of images, described by url and alt text
- let imgs = [
- ...
How can you dynamically create variables via a while loop? [duplicate]
...ainer is holding. This is the only way that I know of to be able to store INDEXES in a string, and be able to change it, and access different indexes dynamically, e.g. if you change which container you are looking inside of.
– Douglas
Nov 16 '16 at 19:38
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How can I put strings in an array, split by new line?
...ant to convert that string into an array, and for every new line, jump one index place in the array.
19 Answers
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Sanitizing strings to make them URL and filename safe?
...(string $input)
https://github.com/OWASP/PHP-ESAPI
https://www.owasp.org/index.php/Category:OWASP_Enterprise_Security_API
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Multiple Updates in MySQL
...ice for dynamic updating too. For example, I used that solution in loop in php: $commandTxt = 'UPDATE operations SET chunk_finished = CASE id '; foreach ($blockOperationChecked as $operationID => $operationChecked) $commandTxt .= " WHEN $operationID THEN $ope...