大约有 47,000 项符合查询结果（耗时：0.0676秒） [XML]
Favorite (Clever) Defensive Programming Best Practices [closed]
...lever defensive techniques other than those that 70%+ of us here already know about. So now it is time to dig deep into your bag of tricks.
...
How can I capture the result of var_dump to a string?
...rray(
)),
'resource' => NULL, // Note that this resource pointer is now NULL
'null' => NULL,
)
var_dump ($debug_dump in above example):
array(8) {
["bool"]=>
bool(false)
["int"]=>
int(1)
["float"]=>
float(3.14)
["string"]=>
string(11) "hello world"
["arr...
Using group by on multiple columns
...
Hi Chaitanya, I do not know if this is what you are asking but let me give you just few example. If you have a product table you use aggregate functions this way, below are two scenarios: SELECT AVG(instock) FROM products; This will calculate ...
Prevent scroll-bar from adding-up to the Width of page on Chrome
...
I got it now, thanks for the clear explanation, I tried this solution and got an additional horizontal scroll-bar, don't know why though.
– Acemad
Sep 2 '13 at 13:15
...
Click through div to underlying elements
...
Also nice to know...
You can disable pointer-events in a parent element (probably transparent div) but have it still enabled for its child elements.
This is helpful if you work with multiple overlapping div layers, where you want to be abl...
Rename multiple files based on pattern in Unix
...
+1 Didn't even know about rename ... Now I can stop using a for loop with mv and sed ... Thanks!
– balpha
Jul 6 '09 at 11:27
...
How can I open multiple files using “with open” in Python?
...asks. No duplicate writing or failing to write. So I am really curious to know why my answer is considered to be wrong, suboptimal or anything like that.
share
|
improve this answer
|
...
Calling method using JavaScript prototype
...he prototype. Your response forces me to create a factory and i'd like to know if there's any way to avoid that.
– R01010010
Dec 24 '14 at 3:09
10
...
What do I use for a max-heap implementation in Python?
...
But you have to remember to wrap and unwrap your values, which requires knowing if you are dealing with a min- or max-heap.
MinHeap, MaxHeap classes
Adding classes for MinHeap and MaxHeap objects can simplify your code:
class MinHeap(object):
def __init__(self): self.h = []
def heappush(self, ...
Access to private inherited fields via reflection in Java
...as widely been used by many Spring customers. I doubt they'll pull it back now.
– Sean Patrick Floyd
Jul 9 '18 at 16:31
add a comment
|
...