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What are all the common ways to read a file in Ruby?
...asuring in gigabytes, and your host is freezing up as it tries to read and allocate memory.
Line-by-line I/O is very fast, and almost always as effective as slurping. It's surprisingly fast actually.
I like to use:
IO.foreach("testfile") {|x| print "GOT ", x }
or
File.foreach('testfile') {|x|...
Handling applicationDidBecomeActive - “How can a view controller respond to the app becoming Active?
...longer need notifications, or when your observer instance is going to be deallocated in the deinit method
– igrek
Feb 20 '18 at 15:35
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When should I use a composite index?
... it compares 5 ways of doing lat/lng searches: http://mysql.rjweb.org/doc.php/latlng#representation_choices (It references the link given above as one of the 5.) One of the other ways is this, and it points out that they are optimal for the particular case:
INDEX(geolat, geolng),
INDEX(geolng, g...
How to check if an object is a list or tuple (but not string)?
...
Python with PHP flavor:
def is_array(var):
return isinstance(var, (list, tuple))
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How do you debug a regex? [closed]
...n other programming languages that also adhere to the PCRE standard (Perl, PHP, etc...).
(...)
Runs on Linux, Unix, Windows, Mac.
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Good Free Alternative To MS Access [closed]
...sktop application). If you think about the web-enabled frontend - consider PHP (with MySQL or PostgreSQL on the backend) or ASP.NET (with MSSQL Server at the backend).
I strongly recommend you not to use C++ for such job. This language is very efficient and flexible, but advanced database frontend ...
Can I use a function for a default value in MySql?
...f their DB package, and it's not as feature rich as we'd like.
http://www.phpbuilder.com/board/showthread.php?t=10349169
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Quick easy way to migrate SQLite3 to MySQL? [closed]
...stracts specific database differences away for you. e.g. you get these in PHP (RedBean), Python (Django's ORM layer, Storm, SqlAlchemy), Ruby on Rails (ActiveRecord), Cocoa (CoreData)
i.e. you could do this:
Load data from source database using the ORM class.
Store data in memory or serialize to...
Need to understand the usage of SemaphoreSlim
...sk that will be completed when that thread has been given "access" to that token. await-ing that task lets the program continue execution when it is "allowed" to do so. Having an asynchronous version, rather than calling Wait, is important both to ensure that the method stays asynchronous, rather ...
How can I debug a .BAT script?
....txt 2>&1
found at http://www.robvanderwoude.com/battech_debugging.php
IT WORKS!! don't forget the 2>&1...
WIZ
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