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Nginx缓存解决方案：SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术
... ngx.exit(ngx.HTTP_SERVICE_UNAVAILABLE)
end
if res == nil and flags == nil and err == nil then
ngx.exit(ngx.HTTP_NOT_FOUND)
end
ngx.print(res)
elseif method == "PUT" then
local value = ngx.req.get_body_data()
local expire = ngx.var.arg_expire or 86400...
Getting the first character of a string with $str[0]
I want to get the first letter of a string and I've noticed that $str[0] works great. I am just not sure whether this is 'good practice', as that notation is generally used with arrays. This feature doesn't seem to be very well documented so I'm turning to you guys to tell me if it's all right –...
How do I convert NSInteger to NSString datatype?
...
NSIntegers are not objects, you cast them to long, in order to match the current 64-bit architectures' definition:
NSString *inStr = [NSString stringWithFormat: @"%ld", (long)month];
...
How to convert ‘false’ to 0 and ‘true’ to 1 in Python
...
@AlbertChen: no, because numpy arrays broadcast comparisons and don't produce a boolean value. Instead, comparisons produce an array of boolean values. I'm not sure what you expect from an arrayvalue == 'true' comparison, the question I answered here is specific to a ...
SQL query for today's date minus two months
...
SELECT COUNT(1)
FROM FB
WHERE
Dte BETWEEN CAST(YEAR(GETDATE()) AS VARCHAR(4)) + '-' + CAST(MONTH(DATEADD(month, -1, GETDATE())) AS VARCHAR(2)) + '-20 00:00:00'
AND CAST(YEAR(GETDATE()) AS VARCHAR(4)) + '-' + CAST(MONTH(GETDATE()) AS VARCHAR(2)) + '-20 00:00:0...
How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
...dy using Boost, you can do it with boost string algorithms + boost lexical cast:
#include <boost/algorithm/string/predicate.hpp>
#include <boost/lexical_cast.hpp>
try {
if (boost::starts_with(argv[1], "--foo="))
foo_value = boost::lexical_cast<int>(argv[1]+6);
} c...
#1071 - Specified key was too long; max key length is 767 bytes
When I executed the following command:
34 Answers
34
...
What is the equivalent of bigint in C#?
...insert and used a
SELECT @@identity
on my bigint primary key, and I get a cast error using long - that was why I started this search. The correct answer, at least in my case, is that the type returned by that select is NUMERIC which equates to a decimal type. Using a long will cause a cast exceptio...
How do I sort an NSMutableArray with custom objects in it?
...
I did this in iOS 4 using a block.
Had to cast the elements of my array from id to my class type.
In this case it was a class called Score with a property called points.
Also you need to decide what to do if the elements of your array are not the right type, for thi...
Converting from IEnumerable to List [duplicate]
...ections.IEnumerable instead of IEnumerable<T> you can use enumerable.Cast<object>().ToList()
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