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Install MySQL on Ubuntu without a password prompt
...-get -y install mysql-server
For specific versions, such as mysql-server-5.6, you'll need to specify the version in like this:
sudo debconf-set-selections <<< 'mysql-server-5.6 mysql-server/root_password password your_password'
sudo debconf-set-selections <<< 'mysql-server-5.6 m...
Reverse Range in Swift
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185
Update For latest Swift 3 (still works in Swift 4)
You can use the reversed() method on a range...
Git, see a list of comments of my last N commits
... you can use the --author=<your name>
For example: to see your last 5 commits
git log -n 5 --author=Salvador
If you want a simpler one line solution:
git log --oneline -n 5 --author=Salvador
Edited to add
If you like the single line version, try creating an alias for git log like this ...
Append an object to a list in R in amortized constant time, O(1)?
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256
If it's a list of string, just use the c() function :
R> LL <- list(a="tom", b="dick")
R...
Validating IPv4 addresses with regexp
...dation, but without much luck. It seemed at one point I had had it with (25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?(\.|$)){4} , but it produces some strange results:
...
How to include a child object's child object in Entity Framework 5
I am using Entity Framework 5 code first and ASP.NET MVC 3 .
4 Answers
4
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How to get the first five character of a String
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You can use Enumerable.Take like:
char[] array = yourStringVariable.Take(5).ToArray();
Or you can use String.Substring.
string str = yourStringVariable.Substring(0,5);
Remember that String.Substring could throw an exception in case of string's length less than the characters required.
If ...
C语言面试那些事儿──一道指针与数组问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...组问题首先看如下代码：int main(int argc, char** argv){ int a[5] = {1,2,3,4,5}; int* ptr = (int*)(&a + 1); ...首先看如下代码：
int main(int argc, char** argv)
{
int a[5] = {1,2,3,4,5};
int* ptr = (int*)(&a + 1);
printf("%d,%d\n", *(a+1), *(ptr-1));
re...