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Show a PDF files in users browser via PHP/Perl
...n why I use cgi to show the pdf is I want to track the clicks for the pdf, and cloak the real location of the saved pdf.
5 ...
How do you use script variables in psql?
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Postgres variables are created through the \set command, for example ...
\set myvariable value
... and can then be substituted, for example, as ...
SELECT * FROM :myvariable.table1;
... or ...
SELECT * FROM table1 WHERE :myvariable IS NULL;
edit: As of psql 9.1, varia...
Hide keyboard when scroll UITableView
...board when i start scrolling UITableView. I search about this in internet, and most answer is subclassing UITableView (http://stackoverflow.com/questions/3499810/tapping-a-uiscrollview-to-hide-the-keyboard).
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Python - 'ascii' codec can't decode byte
...u need to change the encoding, you need to decode it into a unicode string and then encode it as the desired encoding.
– Winston Ewert
Mar 12 '13 at 16:24
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RedirectToAction with parameter
...arameter appears in the URL, which is based on how the RouteConfig file is and how routing mechanisms are. For instance, new { id = 100 } can produce the URL "/100", while new {groupId = 100} might be interpreted as a query string (as was mentioned above), resulting in the URL "?groupId=100".
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How does MongoDB sort records when no sort order is specified?
...ementation detail. Maintaining order is extra overhead for storage engines and MongoDB's API does not mandate predictability outside of an explicit sort() or the special case of fixed-sized capped collections which have associated usage restrictions. For typical workloads it is desirable for the sto...
The Android emulator is not starting, showing “invalid command-line parameter”
... simple "Hello World" program in Eclipse . I added nothing to a Java file and only added a text view in file main.xml as
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How can I extract a good quality JPEG image from a video file with ffmpeg?
Currently I am using this command to extract the images:
2 Answers
2
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What's the opposite of chr() in Ruby?
In many languages there's a pair of functions, chr() and ord() , which convert between numbers and character values. In some languages, ord() is called asc() .
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Interfaces vs. abstract classes [duplicate]
In C#, when should you use interfaces and when should you use abstract classes? What can be the deciding factor?
4 Answers...