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What __init__ and self do on Python?
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In this code:
class A(object):
def __init__(self):
self.x = 'Hello'
def method_a(self, foo):
print self.x + ' ' + foo
... the self variable represents the instance of the object itself. Most object-ori...
From Arraylist to Array
I want to know if it is safe/advisable to convert from ArrayList to Array?
I have a text file with each line a string:
9 An...
Floating elements within a div, floats outside of div. Why?
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The easiest is to put overflow:hidden on the parent div and don't specify a height:
#parent { overflow: hidden }
Another way is to also float the parent div:
#parent { float: left; width: 100% }
Another way uses a clear element:
&...
List of lists changes reflected across sublists unexpectedly
I needed to create a list of lists in Python, so I typed the following:
14 Answers
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What's the fastest way to read a text file line-by-line?
...that my results apply to your environment.
Using StreamReader.ReadLine
This is basically your method. For some reason you set the buffer size to the smallest possible value (128). Increasing this will in general increase performance. The default size is 1,024 and other good choices are 512 (the se...
Measure elapsed time in Swift
... measure the time elapsed for running a function in Swift? I am trying to display the elapsed time like this: "Elapsed time is .05 seconds". Saw that in Java , we can use System.nanoTime(), is there any equivalent methods are available in Swift to accomplish this?
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Django set field value after a form is initialized
I am trying to set the field to a certain value after the form is initialized.
9 Answers
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#1071 - Specified key was too long; max key length is 767 bytes
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767 bytes is the stated prefix limitation for InnoDB tables in MySQL version 5.6 (and prior versions). It's 1,000 bytes long for MyISAM tables. In MySQL version 5.7 and upwards this limit has been increased to 3072 bytes.
You also hav...
HTTP GET with request body
... a body with a GET request.
Yes. In other words, any HTTP request message is allowed to contain a message body, and thus must parse messages with that in mind. Server semantics for GET, however, are restricted such that a body, if any, has no semantic meaning to the request. The requirements on par...
Why does string::compare return an int?
...n int instead of a smaller type like short or char ? My understanding is that this method only returns -1, 0 or 1.
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