大约有 30,000 项符合查询结果（耗时：0.0377秒） [XML]
How to insert text at beginning of a multi-line selection in vi/Vim
... normal mode) restores the last visual selection, this comes in handy from time to time.
share
|
improve this answer
|
follow
|
...
How to use phpexcel to read data and insert into database?
...
getHighestColumn() returns 255 every time. Replacing it with getHighestDataColumn() fixes the problem. Here's more info: stackoverflow.com/questions/15903471/…
– Martin Dzhonov
May 20 '15 at 16:34
...
How Big can a Python List Get?
...
Timing this way can be misleading -- most of the time is spent starting up the Python interpreter. A better way is: python -m timeit.py "l=range(12000); l=sorted(l, reverse=True)". On my machine this gives about 1/20th of the time for this example.
– d...
Switching from zsh to bash on OSX, and back again?
...
There are times when I want to use zsh and other times when it interferes with what I want to do. Setting the default back and forth is a bad idea so this is the perfect solution!!! kudos!!
– Bob Roberts
...
How do I apply the for-each loop to every character in a String?
...
@RAnders00 So, in this case toCharArray( ) is called 3 times?
– denvercoder9
Aug 26 '16 at 15:31
1
...
How to strip all whitespace from string
...goal—writing clear code is—here are some initial timings:
$ python -m timeit '"".join(" \t foo \n bar ".split())'
1000000 loops, best of 3: 1.38 usec per loop
$ python -m timeit -s 'import re' 're.sub(r"\s+", "", " \t foo \n bar ")'
100000 loops, best of 3: 15.6 usec per loop
Note the regex i...
Linux: compute a single hash for a given folder & contents?
...bly faster than sha1sum | sha1sum. YMMV, try each of these on your system: time find path/to/folder -type f -print0 | sort -z | xargs -0 sha1sum | sha1sum; time find path/to/folder -type f -print0 | sort -z | xargs -0 cat | sha1sum
– Bruno Bronosky
Apr 28 '11 a...
Stack, Static, and Heap in C++
... itself. There is only one copy for the entire program. No matter how many times you go into a function call (or class) (and in how many threads!) the variable is referring to the same memory location.
The heap is a bunch of memory that can be used dynamically. If you want 4kb for an object then th...
Convert java.util.Date to String
...e today date using Calendar object.
Date today = Calendar.getInstance().getTime();
// Using DateFormat format method we can create a string
// representation of a date with the defined format.
String todayAsString = df.format(today);
// Print the result!
System.out.println("Today is: " + t...
Track the time a command takes in UNIX/LINUX?
In UNIX/LINUX, is there an easy way to track the time a command takes?
3 Answers
3
...