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How to implement a many-to-many relationship in PostgreSQL?
...ables using serial primary key columns
Auto increment table column
https://www.2ndquadrant.com/en/blog/postgresql-10-identity-columns/
I highly recommend that, because the name of a product is hardly unique (not a good "natural key"). Also, enforcing uniqueness and referencing the column in foreign...
Escape a string for a sed replace pattern
...ows you to use other characters instead of / as separator:
sed 's#"http://www\.fubar\.com"#URL_FUBAR#g'
The double quotes are not a problem.
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Purpose of ESI & EDI registers?
...s no guarantee of them not being used by the C library functions.
https://www.amazon.com/Assembly-Language-Step-Step-Programming/dp/0470497025
See section 12.8 How C sees Command-Line Arguments.
Note that 64-bit calling conventions are different from 32-bit calling conventions, and I am not sure ...
using jquery $.ajax to call a PHP function
...to our function request handler is absolutely required
'path': 'http://www.YourDomain.com/jqueryphp/request_handler.php',
// Synchronous requests are required for method chaining functionality
'async': false,
// List any user defined functions in the manner prescribed here
...
vs.
...nd used as follows
<iframe style="width:100%;height:500px" src="http://www.mysite.co.uk/libs/pdfjs/web/viewer.html?file="http://www.mysite.co.uk/mypdf.pdf"></iframe>
A tutorial on how to use pdf.js can be found at this ejectamenta blog article
...
How to read XML using XPath in Java
...
If you have a xml like below
<e:Envelope
xmlns:d = "http://www.w3.org/2001/XMLSchema"
xmlns:e = "http://schemas.xmlsoap.org/soap/envelope/"
xmlns:wn0 = "http://systinet.com/xsd/SchemaTypes/"
xmlns:i = "http://www.w3.org/2001/XMLSchema-instance">
<e:Header>
...
Database sharding vs partitioning
...here: Instagram Engineering - Sharding & IDs
See here as well: http://www.quora.com/Whats-the-difference-between-sharding-and-partition
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Can you explain the HttpURLConnection connection process?
...target URL of the resource to
// request
URL url = new URL("http://www.example.com/comment");
// instantiate the HttpURLConnection with the URL object - A new
// connection is opened every time by calling the openConnection
// method of the protocol handler for this URL.
// ...
How is the java memory pool divided?
... called Metaspace, which will be held in native memory.
reference：http://www.programcreek.com/2013/04/jvm-run-time-data-areas/
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Using @include vs @extend in Sass?
...almost no benefit. So you can always use mixins! More on this here: http://www.sitepoint.com/sass-extend-nobody-told-you/
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