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What are file descriptors, explained in simple terms?
...cter device files. You can check this with: ls -l /dev/pts/6 and they will start with c, in my case crw--w----.
Just to recall most Linux like OS define seven types of files:
Regular files
Directories
Character device files
Block device files
Local domain sockets
Named pipes (FIFOs) and
Symb...
Difference between two dates in Python
...eed the following:
import datetime
end_date = datetime.datetime.utcnow()
start_date = end_date - datetime.timedelta(days=8)
difference_in_days = abs((end_date - start_date).days)
print difference_in_days
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What is scaffolding? Is it a term for a particular platform?
...g tool for modern webapps
What's Yeoman?
Yeoman helps you to kickstart new projects, prescribing best practices
and tools to help you stay productive.
To do so, we provide a generator ecosystem. A generator is basically a
plugin that can be run with the yo command to scaffold comp...
How to use PHP OPCache?
...iled by default on PHP5.5+. However it is disabled by default. In order to start using OpCache in PHP5.5+ you will first have to enable it. To do this you would have to do the following.
Add the following line to your php.ini:
zend_extension=/full/path/to/opcache.so (nix)
zend_extension=C:\path\to...
IIS: Idle Timeout vs Recycle
...e is a forced action on the application where your processed is closed and started again, for memory leaking purposes and system health
The negative impact of both is usually the use of your Session and Application state is lost if you mess with Recycle to a faster time.(logged in users etc will be...
Is iterating ConcurrentHashMap values thread safe?
...
executor.execute(m);
executor.execute(a2);
}
}
As soon as you start sharing the same Iterator<Map.Entry<String, String>> among accessor and mutator threads java.lang.IllegalStateExceptions will start popping up.
import java.util.Iterator;
import java.util.Map;
import java.u...
Can we have multiple in same ?
... they handle them fine, e.g.: as if they were one <tbody>. When you start to nest tables, that's what usually gives real navigation problems for a screen reader.
– Nick Craver♦
Jun 19 '10 at 18:53
...
how to permit an array with strong parameters
...his:
Parameters: {"link"=>{"title"=>"Something", "time_span"=>[{"start"=>"2017-05-06T16:00:00.000Z", "end"=>"2017-05-06T17:00:00.000Z"}]}}
Then this is how I got it to work:
params.require(:link).permit(:title, time_span: [[:start, :end]])
...
SQL injection that gets around mysql_real_escape_string()
... so easy. It's based off an attack demonstrated here.
The Attack
So, let's start off by showing the attack...
mysql_query('SET NAMES gbk');
$var = mysql_real_escape_string("\xbf\x27 OR 1=1 /*");
mysql_query("SELECT * FROM test WHERE name = '$var' LIMIT 1");
In certain circumstances, that will retur...
How to add global ASP.Net Web Api Filters?
...ters)
{
filters.Add(new MyWebApiFilter());
}
protected void Application_Start()
{
RegisterWebApiFilters(GlobalConfiguration.Configuration.Filters);
}
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