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What does -fPIC mean when building a shared library?
...es and independence between individual modules, but I'm not sure what it really means. Can you explain?
3 Answers
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How to search by key=>value in a multidimensional array in PHP
Is there any fast way to get all subarrays where a key value pair was found in a multidimensional array? I can't say how deep the array will be.
...
How Many Seconds Between Two Dates?
...Z, NN, EE, 0, 0, 0, 0);
var dif = t1.getTime() - t2.getTime();
var Seconds_from_T1_to_T2 = dif / 1000;
var Seconds_Between_Dates = Math.abs(Seconds_from_T1_to_T2);
A handy source for future reference is the MDN site
Alternatively, if your dates come in a format javascript can parse
var dif = Da...
How to test if a string is basically an integer in quotes using Ruby
...z/.match(string_to_check)
#Is not a positive number
else
#Is all good ..continue
end
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Can anyone explain CreatedAtRoute() to me?
...ss CompanyController : Controller
{
private ICompanyRepository _companyRepository;
public CompanyController(ICompanyRepository companyRepository)
{
_companyRepository = companyRepository;
}
[HttpGet("{id}", Name="GetCompany")]
public ...
通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，架构图如下：
Degradation
实现的关键点在于通过error_page处理异常，并且完成服务降级：
limit_conn_zone $server_name zone=perserver:1m;
error_page 500 502 503 504 = @failover;
fastcgi_cache_path
/tmp
levels=1:2
keys_zone=failover:100m
i...
PHP ORMs: Doctrine vs. Propel
...eing the default ORM for symfony it is better supported (even though officially the ORMs are considered equal).
Furthermore I better like the way you work with queries (DQL instead of Criteria):
<?php
// Propel
$c = new Criteria();
$c->add(ExamplePeer::ID, 20);
$items = ExamplePeer::doSelect...
Add list to set?
...rticle. Pythons hashing algorithms are explained on effbot.org and pythons __hash__ function in the python reference.
Some facts:
Set elements as well as dictionary keys have to be hashable
Some unhashable datatypes:
list: use tuple instead
set: use frozenset instead
dict: has no official count...
Android Fragment lifecycle over orientation changes
...mit();
} else {
// do nothing - fragment is recreated automatically
}
Be warned though: problems will occur if you try and access Activity Views from inside the Fragment as the lifecycles will subtly change. (Getting Views from a parent Activity from a Fragment isn't easy).
...
What should I set JAVA_HOME environment variable on macOS X 10.6?
...a_home)
I haven't experienced any problems with that technique.
Occasionally I do have to change the value of JAVA_HOME to an earlier version of Java. For example, one program I'm maintaining requires 32-bit Java 5 on OS X, so when using that program, I set JAVA_HOME by running:
export JAVA_HOM...