大约有 47,000 项符合查询结果（耗时：0.0251秒） [XML]
Why does PHP consider 0 to be equal to a string?
...
You are doing == which sorts out the types for you.
0 is an int, so in this case it is going to cast 'e' to an int. Which is not parsable as one and will become 0. A string '0e' would become 0 and would match!
Use ===
...
How do I check if there are duplicates in a flat list?
...
406
Use set() to remove duplicates if all values are hashable:
>>> your_list = ['one', 't...
Tools for analyzing performance of a Haskell program
...oblem.
Run your program with +RTS -s
$ time ./A +RTS -s
./A +RTS -s
749700
9,961,432,992 bytes allocated in the heap
2,463,072 bytes copied during GC
29,200 bytes maximum residency (1 sample(s))
187,336 bytes maximum slop
**2 MB** total memory in use (0...
How to split a column into two columns?
...er way, but this here's one approach:
row
0 00000 UNITED STATES
1 01000 ALABAMA
2 01001 Autauga County, AL
3 01003 Baldwin County, AL
4 01005 Barbour County, AL
df = pd.DataFrame(df.row.str.split(' ',1).tolist(),
...
How do I give text or an image a transparent background using CSS?
...
30 Answers
30
Active
...
How do I get Flask to run on port 80?
I have a Flask server running through port 5000, and it's fine. I can access it at http://example.com:5000
14 Answers
...
How can I easily view the contents of a datatable or dataview in the immediate window
...Set, expand the quick watch, view the Tables, expand that, then view Table[0] (for example). You will see something like {Table1} in the quick watch, but notice that there is also a magnifying glass icon. Click on that icon and your DataTable will open up in a grid view.
...
Why does this assert throw a format exception when comparing structures?
...
100
I've got it. And yes, it's a bug.
The problem is that there are two levels of string.Format go...
Convert character to ASCII code in JavaScript
...
10 Answers
10
Active
...
What optimizations can GHC be expected to perform reliably?
...
+150
This GHC Trac page also explains the passes fairly well. This page explains the optimization ordering, though, like the majority of th...