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Best explanation for languages without null
... that every reference type gets this extra state in its space that is typically undesired. A string variable could be any sequence of characters, or it could be this crazy extra null value that doesn't map into my problem domain. A Triangle object has three Points, which themselves have X and Y va...
Ignore .pyc files in git repository
...t to to do it beforehand, if you just add the line to the .gitignore file, all previously committed .pyc files will still be tracked, so you'll need to remove them from the repository.
If you are on a Linux system (or "parents&sons" like a MacOSX), you can quickly do it with just this one line ...
Get first n characters of a string
...}
Update 3:
It's been a while since I wrote this answer and I don't actually use this code any more. I prefer this function which prevents breaking the string in the middle of a word using the wordwrap function:
function truncate($string,$length=100,$append="…") {
$string = trim($st...
How can I include a YAML file inside another?
...ve added an answer below...hope it helps.
– daveaspinall
Aug 19 '15 at 9:39
1
If you're using Rai...
What is “:-!!” in C code?
...sizeof(struct { int: -!!(e); }))
(e): Compute expression e.
!!(e): Logically negate twice: 0 if e == 0; otherwise 1.
-!!(e): Numerically negate the expression from step 2: 0 if it was 0; otherwise -1.
struct{int: -!!(0);} --> struct{int: 0;}: If it was zero, then we declare a struct with an an...
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 20: ordinal not in rang
...read the Python Unicode HOWTO. This error is the very first example.
Basically, stop using str to convert from unicode to encoded text / bytes.
Instead, properly use .encode() to encode the string:
p.agent_info = u' '.join((agent_contact, agent_telno)).encode('utf-8').strip()
or work entirely i...
Encoding an image file with base64
... here is an update after you have edited your original question.
First of all, remember to use raw strings (prefix the string with 'r') when using path delimiters on Windows, to prevent accidentally hitting an escape character. Second, PIL's Image.open either accepts a filename, or a file-like (tha...
JPA: what is the proper pattern for iterating over large result sets?
...er way to iterate over a query against that table, such that I don't have all an in-memory List with millions of objects?
...
Android webview slow
...
I have noticed that turning off hardware acceleration actually makes my app faster. With android:hardwareAccelerated="true" CSS 3D animations had long delays before they started, scrolling of DIVs inside other scrollable DIVs didn't work, and the app was more unstable.
...
How to find the installed pandas version
...trouble with some of pandas functionalities. How do I check what is my installation version?
6 Answers
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