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Build a Basic Python Iterator
...have like a sequence, i.e. give it __getitem__ and __len__ methods. I have tested this on Python 2 and 3.
class CustomRange:
def __init__(self, low, high):
self.low = low
self.high = high
def __getitem__(self, item):
if item >= len(self):
raise Index...
How do I expand the output display to see more columns of a pandas DataFrame?
...se]
: boolean
Whether to simulate interactive mode for purposes of testing
mode.use_inf_as_null: [default: False] [currently: False]
: boolean
True means treat None, NaN, INF, -INF as null (old way),
False means None and NaN are null, but INF, -INF are not null
(new w...
Reference - What does this error mean in PHP?
... indexes do exist when you expect them to. Or it may mean that you need to test whether the indexes exist using array_key_exists or isset:
$data = array('foo' => '42', 'bar');
if (array_key_exists('spinach', $data)) {
echo $data['spinach'];
}
else {
echo 'No key spinach in the array';
}
...
Reference: What is variable scope, which variables are accessible from where and what are “undefined
...iable is available to the function without any problem.
<?php
function test() {
echo $_ENV["user"];
}
The general rule of "globals are bad" is typically amended in PHP to "globals are bad but superglobals are alright," as long as one is not misusing them. (All these variables are writable,...
Appending a vector to a vector [duplicate]
...bstdc++. std::copy is indeed slower than using std::vector::insert. I just tested it with libstdc++ that came with g++ 4.4.5.
– Marc Claesen
May 30 '13 at 21:43
1
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Which is more efficient: Multiple MySQL tables or one large table?
...around a smaller unit of functionality, so that it is easier to comprehend/test/change, and clear where that unit interacts with other units of functionality. The goal is to keep most connections (references, calls) inside one unit, with few connections between units. Defining several interfaces tha...
What is Type-safe?
...ou up to a lot of errors that can be easily missed, and only identified by testing the running program. Personally, I prefer to have my compiler tell me if I made that mistake.
Now, back to C#...
C# supports a language feature called covariance, this basically means that you can substitute a base ...
Why does an image captured using camera intent gets rotated on some devices on Android?
...he final complete solution for this issue that will do the following after testing it on Android Android 4.1 (Jelly Bean), Android 4.4 (KitKat) and Android 5.0 (Lollipop).
Steps
Scale down the image if it was bigger than 1024x1024.
Rotate the image to the right orientation only if it was rotate ...
What is the difference between DAO and Repository patterns?
...EJB3), Hibernate ORM as infrastructure, and Domain-Driven Design (DDD) and Test-Driven Development (TDD) as design techniques.
...
Python vs Bash - In which kind of tasks each one outruns the other performance-wise? [closed]
...lies machine performance and not developer performance. See my performance tests in another answer.
– Grzegorz Luczywo
Aug 6 '14 at 23:08
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