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What are some common uses for Python decorators? [closed]
...ading
lock = threading.Lock()
@synchronized(lock)
def do_something():
# etc
@synchronzied(lock)
def do_something_else():
# etc
Basically it just puts lock.acquire() / lock.release() on either side of the function call.
...
How to check if a String is numeric in Java
...fine for most ints but not so for numbers with decimals, group separators, etc.
– Jeff Mercado
Feb 8 '13 at 23:19
43
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What is InputStream & Output Stream? Why and when do we use them?
...ngs (like the screen, or Files, or byte arrays, or network connections, or etc). InputStream classes access the same things, but they read data in from them.
Here is a good basic example of using FileOutputStream and FileInputStream to write data to a file, then read it back in.
...
What is the difference between functional and non functional requirement? [closed]
... a certain condition is met (e.g. an order is placed, a customer signs up, etc).
A related non-functional requirement for the system may be:
Emails should be sent with a latency of no greater than 12 hours from such an activity.
The functional requirement is describing the behavior of the sys...
Why do I get a “Null value was assigned to a property of primitive type setter of” error message whe
...ull value cannot be assigned to a primitive type, like int, long, boolean, etc. If the database column that corresponds to the field in your object can be null, then your field should be a wrapper class, like Integer, Long, Boolean, etc.
The danger is that your code will run fine if there are no nu...
How do I add tab completion to the Python shell?
...e.py shell , I get an InteractiveConsole shell - I can use tab completion, etc.
9 Answers
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How to pass all arguments passed to my bash script to a function of mine? [duplicate]
...arentheses make it an array), and then reference them as e.g. "${args[0]}" etc (note that bash array indexes start at 0, so $1 will be in args[0], etc).
Leaving off the double-quotes, with either $@ or $*, will try to split each argument up into separate words (based on whitespace or whatever's in $...
Do I need dependency injection in NodeJS, or how to deal with …?
...ter name)
var db = require('whichever_db_vendor_i_use');
module.exports.fetchConnection() = function() {
//logic to test connection
//do I want to connection pool?
//do I need only one connection throughout the lifecyle of my application?
return db.createConnection(port, host, d...
How to create the perfect OOP application [closed]
...ct and ShoppingCartItem. Product should have the product name, tax status, etc. but not quantity. Quantity is not a property of a product - it'll be different for each customer of the company who buys that particular product.
ShoppingCartItem should have a Product and the quantity. That way the cust...
Styles.Render in MVC4
... build "skins" or separate style models for say different devices, themes, etc. like so:
<link rel="stylesheet" href="~/UI/Skins/skin1/base.css" />
<link rel="stylesheet" href="~/UI/Skins/skin2/base.css" />
Using this system and Razor you can now switch out the Skin Path from a databa...