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Python function overloading
...','y','z'])
>>> @dispatch(Sprite, Point, Vector, int)
... def add_bullet(sprite, start, direction, speed):
... print("Called Version 1")
...
>>> @dispatch(Sprite, Point, Point, int, float)
... def add_bullet(sprite, start, headto, speed, acceleration):
... print("Called ve...
Exposing database IDs - security risk?
... They are everywhere. Many shoppingsites use a sequential number for the order id. Place one order at one date, and one at another date and you know how many orders they got during that period. Even if you don't know how much money the orders are worth, you still get an indication of how the well ...
Append text to input field
...might want to write a function:
//Append text to input element
function jQ_append(id_of_input, text){
var input_id = '#'+id_of_input;
$(input_id).val($(input_id).val() + text);
}
After you can just call it:
jQ_append('my_input_id', 'add this text');
...
Shared-memory objects in multiprocessing
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@max Use a closure. The function given to apply_async should reference the shared object in scope directly instead of through its arguments.
– Francis Avila
Feb 3 '15 at 22:44
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Why must jUnit's fixtureSetup be static?
... it easier to write tests without side-effects. Good tests do not have any order-of-run dependencies (see F.I.R.S.T) and creating fresh instances of the test class and its instance variables for each test is crucial in achieving this. Some testing frameworks reuse the same test class instance for al...
Where is my Django installation?
...go
<module 'django' from '/usr/local/lib/python2.6/dist-packages/django/__init__.pyc'>
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Fetch the row which has the Max value for a column
...rrent one"
The windowing clause is only applicable in the presence of the order by clause. With no order by clause, no windowing clause is applied by default and none can be explicitly specified.
The code works.
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Sankey Diagrams in R?
...it <- as.data.frame(Titanic)
# 4d
alluvial( tit[,1:4], freq=tit$Freq, border=NA,
hide = tit$Freq < quantile(tit$Freq, .50),
col=ifelse( tit$Class == "3rd" & tit$Sex == "Male", "red", "gray") )
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Show current assembly instruction in GDB
...───────────────┐
│0x7ffff740d756 <__libc_start_main+214> mov 0x39670b(%rip),%rax #│
│0x7ffff740d75d <__libc_start_main+221> mov 0x8(%rsp),%rsi │
│0x7ffff740d762 <__libc_start_main+226> mov 0x14(%rsp)...
Can you provide some examples of why it is hard to parse XML and HTML with a regex? [closed]
...HTML and XML are recursive structures which require counting mechanisms in order to properly parse. A true regex is not capable of counting. You must have a context free grammar in order to count.
The previous paragraph comes with a slight caveat. Certain regex implementations now support the ide...