大约有 44,000 项符合查询结果（耗时：0.0724秒） [XML]
How to use phpexcel to read data and insert into database?
...hp application where I want to read data from excel, Insert into database and then generate pdf reports for specific users.
I searched a lot but nothing specific given about both things.
...
Difference between exit() and sys.exit() in Python
In Python, there are two similarly-named functions, exit() and sys.exit() . What's the difference and when should I use one over the other?
...
How can you dynamically create variables via a while loop? [duplicate]
...ould just use a dictionary, where you can dynamically create the key names and associate a value to each.
a = {}
k = 0
while k < 10:
<dynamically create key>
key = ...
<calculate value>
value = ...
a[key] = value
k += 1
There are also some interesting dat...
How do I apply the for-each loop to every character in a String?
... newly allocated character array whose length is the length of this string and whose contents are initialized to contain the character sequence represented by this string.
There are more verbose ways of iterating over characters in an array (regular for loop, CharacterIterator, etc) but if you're ...
How do I extract text that lies between parentheses (round brackets)?
I have a string User name (sales) and I want to extract the text between the brackets, how would I do this?
16 Answers
...
Why is Lisp used for AI? [closed]
I've been learning Lisp to expand my horizons because I have heard that it is used in AI programming. After doing some exploring, I have yet to find AI examples or anything in the language that would make it more inclined towards it.
...
Referring to a Column Alias in a WHERE Clause
...t, as mentioned in other answers, you can force SQL to treat SELECT to be handled before the WHERE clause. This is usually done with parenthesis to force logical order of operation or with a Common Table Expression (CTE):
Parenthesis/Subselect:
SELECT
*
FROM
(
SELECT
logcount, logUserI...
Working with time DURATION, not time of day
I'm doing some benchmarking, and I want to use Excel to produce graphs of the results. I've got a simple but annoying problem which is baking my noodle.
...
How can I fill out a Python string with spaces?
...
@simon 's answer is more flexible and more useful when formatting more complex strings
– CoatedMoose
Jul 27 '13 at 7:08
4
...
Perform an action in every sub-directory using Bash
... # your processing here
fi
done
Or, if your action is a single command, this is more concise:
for D in *; do [ -d "${D}" ] && my_command; done
Or an even more concise version (thanks @enzotib). Note that in this version each value of D will have a trailing slash:
for D in */; do ...