大约有 43,000 项符合查询结果（耗时：0.0238秒） [XML]
How can I output a UTF-8 CSV in PHP that Excel will read properly?
...s got to be UTF-8. I open this file in TextEdit or TextMate or Dreamweaver and it displays UTF-8 characters properly, but if I open it in Excel it's doing this silly íÄ kind of thing instead. Here's what I've got at the head of my document:
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Given an array of numbers, return array of products of all other numbers (no division)
I was asked this question in a job interview, and I'd like to know how others would solve it. I'm most comfortable with Java, but solutions in other languages are welcome.
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Select N random elements from a List in C#
I need a quick algorithm to select 5 random elements from a generic list. For example, I'd like to get 5 random elements from a List<string> .
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Increasing (or decreasing) the memory available to R processes
...rror that R
has run out of memory.
If you have R already installed and
subsequently install more RAM, you may
have to reinstall R in order to take
advantage of the additional capacity.
You may also set the amount of
available memory manually. Close R,
then right-click on your...
How to get unique values in an array
...hat uses no libraries. This requires two new prototype functions, contains and unique
Array.prototype.contains = function(v) {
for (var i = 0; i < this.length; i++) {
if (this[i] === v) return true;
}
return false;
};
Array.prototype.unique = function() {
var arr = [];
...
Printing 1 to 1000 without loop or conditionals
... address hence evading the pointer errors.
This version of the above in standard C, since it doesn't rely on arithmetic on function pointers:
#include <stdio.h>
#include <stdlib.h>
void f(int j)
{
static void (*const ft[2])(int) = { f, exit };
printf("%d\n", j);
ft[j/1000...
write a shell script to ssh to a remote machine and execute commands
...
There are multiple remote linux machines, and I need to write a shell script which will execute the same set of commands in each machine. (Including some sudo operations). How can this be done using shell scripting?
You can do this with ssh, for example:
#!/bin/ba...
How do I capitalize first letter of first name and last name in C#?
Is there an easy way to capitalize the first letter of a string and lower the rest of it? Is there a built in method or do I need to make my own?
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What is “android.R.layout.simple_list_item_1”?
I've started learning Android development and am following a todolist example from a book:
7 Answers
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Is System.nanoTime() completely useless?
...ventov's answer offers a more up-to-date perspective.
That post is wrong, and nanoTime is safe. There's a comment on the post which links to a blog post by David Holmes, a realtime and concurrency guy at Sun. It says:
System.nanoTime() is implemented using the QueryPerformanceCounter/QueryPerfo...