大约有 41,000 项符合查询结果（耗时：0.0643秒） [XML]
How to get whole and decimal part of a number?
...
$n = 1.25;
$whole = floor($n); // 1
$fraction = $n - $whole; // .25
Then compare against 1/4, 1/2, 3/4, etc.
In cases of negative numbers, use this:
function NumberBreakdown($number, $returnUnsigned = false)
{
$negative = 1;
if ($num...
A worthy developer-friendly alternative to PayPal [closed]
I understand payments are a tricky thing, but I'm yet to find a worthy alternative to PayPal. I want to change from PayPal because I think they are expensive and it doesn't work in all countries. Furthermore, I think that the API is sufficient, but could be better. The API documentation, however, is...
JavaScript style for optional callbacks
...k and run it. Is checking if the callback is defined/function a good style or is there a better way?
10 Answers
...
How do I tell CPAN to install all dependencies?
...; $c->edit(build_requires_install_policy => "yes"); $c->commit'
Or combine it with local::lib module for non-privileged users:
perl -MCPAN -Mlocal::lib=~/perl5 -e 'my $c = "CPAN::HandleConfig"; $c->load(doit => 1, autoconfig => 1); $c->edit(prerequisites_policy => "follow"...
C++ template constructor
I wish to have a non-template class with a template constructor with no arguments.
8 Answers
...
What is the difference between a 'closure' and a 'lambda'?
...c(): return h
def anotherfunc(h):
return func()
This will cause an error, because func does not close over the environment in anotherfunc - h is undefined. func only closes over the global environment. This will work:
def anotherfunc(h):
def func(): return h
return func()
Because her...
Can you “ignore” a file in Perforce?
I sometimes use the feature 'Reconcile Offline Work...' found in Perforce's P4V IDE to sync up any files that I have been working on while disconnected from the P4 depot. It launches another window that performs a 'Folder Diff'.
...
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
... (surely not optimal) implementations in C, Python, Erlang and Haskell. In order to get some higher execution times, I search for the first triangle number with more than 1000 divisors instead of 500 as stated in the original problem.
...
How to change column datatype from character to numeric in PostgreSQL 8.4
... data type to new. A USING clause must be provided if there is no implicit or assignment cast from old to new type.
So this might work (depending on your data):
alter table presales alter column code type numeric(10,0) using code::numeric;
-- Or if you prefer standard casting...
alter table presa...
How to dynamically insert a tag via jQuery after page load?
I'm having problems getting this to work. I first tried setting my script tags as strings and then using jquery replaceWith() to add them to the document after page load:
...