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Common MySQL fields and their appropriate data types
I am setting up a very small MySQL database that stores, first name, last name, email and phone number and am struggling to find the 'perfect' datatype for each field. I know there is no such thing as a perfect answer, but there must be some sort of common convention for commonly used fields such as...
How do I write LINQ's .Skip(1000).Take(100) in pure SQL?
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No, but you could emulate MySQL's LIMIT clause (Stack Overflow link) to achieve the same result.
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What's the difference between HEAD^ and HEAD~ in Git?
... / ],
F => [ qw/ I J / ],
);
sub postorder {
my($root,$hash) = @_;
my @parents = @{ $parents{$root} || [] };
postorder($_, $hash) for @parents;
return if $sha1{$root};
@parents = map "-p $sha1{$_}", @parents;
chomp($sha1{$root} = `git commit-tree @parents -m "$roo...
Fragment over another fragment issue
...ayoutInflater inflater,ViewGroup container,Bundle savedInstance){
View root = somehowCreateView();
/*here is an implementation*/
root.setOnTouchListener(new View.OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
return true;
}
});
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How do I create a self-signed certificate for code signing on Windows?
...tificates MMC snapin, but from the command line:
certutil -user -addstore Root MyCA.cer
Creating a code-signing certificate (SPC)
makecert -pe -n "CN=My SPC" -a sha256 -cy end ^
-sky signature ^
-ic MyCA.cer -iv MyCA.pvk ^
-sv MySPC.pvk MySPC.cer
It is pretty much th...
Difference between BeautifulSoup and Scrapy crawler?
...ter extraction. For example we can configure pipeline to push data to your mysql server.
Cookies: scrapy automatically handles cookies for us.
etc.
TLDR: scrapy is a framework that provides everything that one might
need to build large scale crawls. It provides various features that
hide c...
MySQL skip first 10 results
Is there a way in MySQL to have the first 10 result from a SELECT query skipped?
I'd like it to work something like LIMIT.
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MQTT与TCP的区别 - 创客硬件开发 - 清泛IT社区，为创新赋能！
... Maori dictionary)。10. mqtt客户端connect时，可以带有用户名和密码，用于验证客户端。服务端可以根据clientid、IP地址、用户名等进行ACL访问控制。可以通过自定义应用消息实现客户端对服务端的身份验证。11. 有商业和开源的mqtt broke...
Delete directory with files in it?
...ting /, this would only work if you'd lounch the script in command line as root, because in web everything happens as apache user
– Ben
Jun 27 '14 at 9:40
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How to work with complex numbers in C?
...introduced in mathematics, from the need of calculating negative quadratic roots. Complex number concept was taken by a variety of engineering fields.
Today that complex numbers are widely used in advanced engineering domains such as physics, electronics, mechanics, astronomy, etc...
Real and imag...