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Build a Basic Python Iterator
...n (defines __getitem__)
Examples:
# generator
def uc_gen(text):
for char in text.upper():
yield char
# generator expression
def uc_genexp(text):
return (char for char in text.upper())
# iterator protocol
class uc_iter():
def __init__(self, text):
self.text = text.upp...
Add line break to ::after or ::before pseudo-element content
...in the generated content by writing the "\A" escape sequence in one of the strings after the 'content' property. This inserted line break is still subject to the 'white-space' property. See "Strings" and "Characters and case" for more information on the "\A" escape sequence.
So you can use:
#head...
How can I get the behavior of GNU's readlink -f on a Mac?
....restype = ctypes.c_char_p
def realpath(path):
buffer = ctypes.create_string_buffer(1024) # PATH_MAX
if libc.realpath(path, buffer):
return buffer.value
else:
errno = libc.__error().contents.value
raise OSError(errno, "%s: %s" % (libc.strerror(errno), buffer.valu...
Android, ListView IllegalStateException: “The content of the adapter has changed but ListView did no
...public class ListViewStressTest extends ListActivity {
ArrayAdapter<String> adapter;
ListView list;
AsyncTask<Void, String, Void> task;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.adapter = new...
Converting String to Int with Swift
...to calculate acceleration. However, since the values in the text boxes are string, I am unable to convert them to integers.
...
RestSharp JSON Parameter Posting
... sets content type to application/json and serializes the object to a JSON string.
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Memory footprint of Haskell data types
...of type Int and Char, so in many cases these take no heap space at all. A String only requires space for the list cells, unless you use Chars > 255.
An Int8 has identical representation to Int. Integer is defined like this:
data Integer
= S# Int# -- small integers...
How to check if an int is a null
...o be able to be null, you need to use Integer instead of int.
Integer id;
String name;
public Integer getId() { return id; }
Besides the statement if(person.equals(null)) can't be true, because if person is null, then a NullPointerException will be thrown. So the correct expression is if (person...
Checkstyle vs. PMD
...ion files to spare the team from an avalanche of irrelevant feedback ("Tab char on line 5", "Tab char on line 6", "Tab char on line 7"... you get the picture). They also provide powerful tools to write your own advanced rules, e.g. the Checkstyle DescendentToken rule.
When using all three (especial...
How do I set the size of Emacs' window?
...-resolution ()
(interactive)
(if window-system
(progn
;; use 120 char wide window for largeish displays
;; and smaller 80 column windows for smaller displays
;; pick whatever numbers make sense for you
(if (> (x-display-pixel-width) 1280)
(add-to-list 'default-fra...