大约有 473 项符合查询结果（耗时：0.0061秒） [XML]
Generate random numbers uniformly over an entire range
...ors are typically deterministic. For example, if first rand call returns 0x1234 and second 0x5678, then you get 0x12345678. That is the only number that you can get that starts with 0x1234, because next number will always be 0x5678. You get 32-bit results, but you only have 32768 possible numbers.
...
How to remove leading zeros from alphanumeric text?
...t the entire string will be matched.
Test harness:
String[] in = {
"01234", // "[1234]"
"0001234a", // "[1234a]"
"101234", // "[101234]"
"000002829839", // "[2829839]"
"0", // "[0]"
"0000000", // "[0]"
"0000009", // "[9]"
...
Can't stop rails server
...llowing are steps to kill server process:
1. lsof -i tcp:3000
2. kill -9 1234
where 1234 is the PID of process: localhost:3000 display in step 1.
OR
Remove file(server.pid) under Rails.root/tmp/pids/ and restart server.
OR
open app in another port by using command:
rails s -p 3001
...
Unable to resolve host “”; No address associated with hostname [closed]
...ttp.proxyHost", "my.proxyhost.com");
System.setProperty("http.proxyPort", "1234");
2 Your browser has access to internet. not app
3 can be an SSL issue if URL is secured
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What's the difference of “./configure” option “--build”, “--host” and “--target”?
...s
so that you could putty on to your embedded device and run "gdbserver :1234 a.out" to start debugging and listen on port 1234.
You would then build your debugging client (which connects to and controls the gdbserver) with
./configure --build=powerpc --host=i686 --target=mips
which you woul...
The tilde operator in C
... that ~x + 1 gives the same value as -x. For example, printf("%hx %hx\n", -1234, ~1234 + 1) prints fb2e fb2e on my machine.
– Steve Summit
Jan 26 '16 at 23:00
...
How do you express binary literals in Python?
...
int(hex(1234), 16) = 1234 :D
– Jean Monet
Sep 12 at 11:10
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Printing the correct number of decimal points with cout
...lt;iomanip>
int main(int argc, char** argv)
{
float testme[] = { 0.12345, 1.2345, 12.345, 123.45, 1234.5, 12345 };
std::cout << std::setprecision(2) << std::fixed;
for(int i = 0; i < 6; ++i)
{
std::cout << testme[i] << std::endl;
}
re...
Folder is locked and I can't unlock it
...he local folders, just use svn cleanup.
Before:
# svn commit -m "fixing #1234"
# svn st
# svn cleanup
After:
# svn st
# svn commit -m "fixing #1234"
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程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
...钥也可以用作解密密钥。 比如，我们给WORD文档设置密码1234, 那么其他人想要打开文档也必须输入1234才能打开。
常用加密算法:
DES（Data Encryption Standard）：数据加密标准，速度较快，适用于加密大量数据的场合。
3DES（Triple D...