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How do I implement __getattribute__ without an infinite recursion error?
... avoid the recursive hell you were in before.
Ipython output with code in foo.py:
In [1]: from foo import *
In [2]: d = D()
In [3]: d.test
Out[3]: 0.0
In [4]: d.test2
Out[4]: 21
Update:
There's something in the section titled More attribute access for new-style classes in the current documen...
Finding Variable Type in JavaScript
...
Use typeof:
> typeof "foo"
"string"
> typeof true
"boolean"
> typeof 42
"number"
So you can do:
if(typeof bar === 'number') {
//whatever
}
Be careful though if you define these primitives with their object wrappers (which you should ...
Yank file name / path of current buffer in Vim
... has("mac") || has("gui_macvim") || has("gui_mac")
" relative path (src/foo.txt)
nnoremap <leader>cf :let @*=expand("%")<CR>
" absolute path (/something/src/foo.txt)
nnoremap <leader>cF :let @*=expand("%:p")<CR>
" filename (foo.txt)
nnoremap <leader&g...
__proto__ VS. prototype in JavaScript
...that is used to build __proto__ when you create an object with new:
( new Foo ).__proto__ === Foo.prototype;
( new Foo ).prototype === undefined;
share
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...
JavaScript null check
...
typeof foo === "undefined" is different from foo === undefined, never confuse them. typeof foo === "undefined" is what you really need. Also, use !== in place of !=
So the statement can be written as
function (data) {
if (typeof...
How to pass macro definition from “make” command line arguments (-D) to C source code?
...
Just use a specific variable for that.
$ cat Makefile
all:
echo foo | gcc $(USER_DEFINES) -E -xc -
$ make USER_DEFINES="-Dfoo=one"
echo foo | gcc -Dfoo=one -E -xc -
...
one
$ make USER_DEFINES="-Dfoo=bar"
echo foo | gcc -Dfoo=bar -E -xc -
...
bar
$ make
echo foo | gcc -E -xc -
.....
How to pipe list of files returned by find command to cat to view all the files
...do what you are wanting to do -- but is specific to find)
find . -name '*.foo' -exec cat {} \;
(Everything between find and -exec are the find predicates you were already using. {} will substitute the particular file you found into the command (cat {} in this case); the \; is to end the -exec co...
How to run code when a class is subclassed? [duplicate]
...Classes (by default) are instances of type.
Just as an instance of a class Foo is created by foo = Foo(...),
an instance of type (i.e. a class) is created by myclass = type(name, bases, clsdict).
If you want something special to happen at the moment of class-creation, then you have to modify the th...
Restful way for deleting a bunch of items
...about what we mean with our URL, parameters and REST method.
return all 'foo' elements:
[GET] api/foo
return 'foo' elements with filtering for specific ids:
[GET] api/foo?ids=3,5,9
Wherein the sense is the URL and the filter determine "what elements we are dealing with?", and the REST method (...
Capturing multiple line output into a Bash variable
...actical purposes this is way easier to deal with.
./myscript.sh > /tmp/foo
while read line ; do
echo 'whatever you want to do with $line'
done < /tmp/foo
Quick hack to make it do the requested action:
result=""
./myscript.sh > /tmp/foo
while read line ; do
result="$result$line\n"...