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Getting the location from an IP address [duplicate]
I want to retrieve information like the city, state, and country of a visitor from their IP address, so that I can customize my web page according to their location. Is there a good and reliable way to do this in PHP? I am using JavaScript for client-side scripting, PHP for server-side scripting, an...
What are the main purposes of using std::forward and which problems it solves?
...value category of a type: if it was an lvalue, we have an lvalue-reference parameter, otherwise we have an rvalue-reference parameter.
In code:
template <typename T>
void deduce(T&& x);
int i;
deduce(i); // deduce<int&>(int& &&) -> deduce<int&>(in...
Reading a simple text file
I am trying to read a simple text file in my sample Android Application. I am using the below written code for reading the simple text file.
...
Is non-blocking I/O really faster than multi-threaded blocking I/O? How?
...ue its work in parallel. Of course you can achieve this also using an additional thread. As you stated for best overall (system) performance I guess it would be better to use asynchronous I/O and not multiple threads (so reducing thread switching).
Let's look at possible implementations of a networ...
Using printf with a non-null terminated string
...ion specifications in a printf template string have the general form:
% [ param-no $] flags width [ . precision ] type conversion
or
% [ param-no $] flags width . * [ param-no $] type conversion
The second form is for getting the precision from the argument list:
You can also specify...
When does System.getProperty(“java.io.tmpdir”) return “c:\temp”
Just curious as to when System.getProperty("java.io.tmpdir") returns "c:\temp" . According to the java.io.File Java Docs -
...
Unzip files programmatically in .net
...ng SharpZipLib and it worked fine. I guess I'll have to see if the prohibition against third party libs and apss is a strict rule or more of a guidline.
– Petteri
May 7 '09 at 21:49
...
Convert HTML to NSAttributedString in iOS
...
In iOS 7, UIKit added an initWithData:options:documentAttributes:error: method which can initialize an NSAttributedString using HTML, eg:
[[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUTF8StringEncodi...
What is the list of possible values for navigator.platform as of today? [closed]
.... Never rely on the navigator object to be completely accurate.
The definition
As far as I know there isn't a single public list of all possible `navigator.platform` values, even though the property has been around for quite a bit. To make things worse, the property's definition changed throughout t...
What is the difference between gravity and layout_gravity in Android?
... of all child views of a container; use android:layout_gravity or setLayoutParams() to control gravity of an individual view in a container.
Long story: to control gravity in a linear layout container such as LinearLayout or RadioGroup, there are two approaches:
1) To control the gravity of ALL ch...