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Convert Rows to columns using 'Pivot' in SQL Server
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If you are using SQL Server 2005+, then you can use the PIVOT function to transform the data from rows into columns.
It sounds like you will need to use dynamic sql if the weeks are unknown but it is easier to see the correc...
OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...d for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented. Uncommented options override the
# default value.
# If you want to change the port on a SELinux system, you have to tell
# SELinux about ...
Any way to replace characters on Swift String?
I am looking for a way to replace characters in a Swift String .
21 Answers
21
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Redirecting EC2 Elastic Load Balancer from HTTP to HTTPS
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AWS Application Load Balancers now support native HTTP to HTTPS redirect.
To enable this in the console, do the the following:
Go to your Load Balancer in EC2 and tab "Listeners"
Select "View/edit rules" on your HTTP listener
Delete all rules except for...
CSS hack大全 - 创意 - 清泛网 - 专注C/C++及内核技术
...色是金黄色，Safari和Chrome使用的都是Webkit内核</span >
<!--[if IE 8]>IE8的辨别色是蓝色，新版IE8的功能可是不少呢。<![endif]-->
<!--[if IE 7]>IE7的辨别色是紫色，IE7还可以凑合着用！<![endif]-->
<!--[if IE 6]>IE6的辨别色是红色，不过，IE6可...
hash function for string
...e as safe as you think--for example, IEEE floating point numbers have two different bit patterns (0 and -0) that should produce the same hashes (they'll compare as equal to each other).
– Jerry Coffin
Jul 15 '15 at 22:02
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Difference between dispatch_async and dispatch_sync on serial queue?
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Yes. Using serial queue ensure the serial execution of tasks. The only difference is that dispatch_sync only return after the block is finished whereas dispatch_async return after it is added to the queue and may not finished.
for this code
dispatch_async(_serialQueue, ^{ printf("1"); });
print...
How do I make an asynchronous GET request in PHP?
...This is a handy code snippet, and I've been using it here and there, but I now find that I need to do the same thing, but with an SSL site. Is there anything I need to change besides the HTTP/1.1 type and the port?
– Kevin Jhangiani
Apr 12 '11 at 21:59
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java.net.URLEncoder.encode(String) is deprecated, what should I use instead?
...re static methods. It would take the same amount of effort to type either. If you like Python, why are you programming in Java? Is it because more people use Java than Python and you got a Java job instead of Python job?
– stepanian
Feb 27 '12 at 9:07
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Android OpenGL ES and 2D
...e it as an initializer parameter
{
/*many thanks to sprite method test if this works*/
if ( gl == null )
{
Log.e(TAG, "Failed to load resource. Context/GL is NULL");
return false;
}
int error;
int textureName = -1;
gl.glGenTextures(1, texture, 0);
te...