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How to get Erlang's release version number from a shell?
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From the docs for erlang:system_info: As from OTP 17, the OTP release number corresponds to the major OTP version number. No erlang:system_info() argument gives the exact OTP version. See my answer below for an even uglier co...
What is so bad about singletons? [closed]
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Paraphrased from Brian Button:
They are generally used as a global instance, why is that so bad? Because you hide the dependencies of your application in your code, instead of exposing them through the interfaces. Making something glob...
iPhone Data Usage Tracking/Monitoring
...statistic (ifa_data->ifi_obytes and ifa_data->ifi_ibytes) are stored from previous device reboot.
I don't know why, but ifi_opackets and ifi_ipackets are shown just for lo0 (I think its main interface ).
Yes. Then device is connected via WiFi and doesn't use internet if_iobytes values sti...
Connecting to TCP Socket from browser using javascript
...ponse received, log it:
console.log("Data received from server:" + value);
}
// Close the TCP connection
mySocket.close();
}
);
},
e => console.error("Sending error: ",...
How to find an available port?
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How do I find this port from client? ;)
– ed22
Jun 29 '18 at 9:48
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Should all Python classes extend object?
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In Python 2, not inheriting from object will create an old-style class, which, amongst other effects, causes type to give different results:
>>> class Foo: pass
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>>> type(Foo())
<type 'instance'>
vs.
>>> class Ba...
CMake: How to build external projects and include their targets
... and then the CMakeLists file for project B would include the targets file from project A, but your "Super Build" CMakeLists would just build A and then B, both as ExternalProjects...
– DLRdave
Mar 7 '13 at 16:48
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Show Image View from file path?
I need to show an image by using the file name only, not from the resource id.
13 Answers
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Copying files from one directory to another in Java
I want to copy files from one directory to another (subdirectory) using Java. I have a directory, dir, with text files. I iterate over the first 20 files in dir, and want to copy them to another directory in the dir directory, which I have created right before the iteration.
In the code, I want to c...
Java: difference between strong/soft/weak/phantom reference
...is useful only to know exactly when an object has been effectively removed from memory: normally they are used to fix weird finalize() revival/resurrection behavior, since they actually do not return the object itself but only help in keeping track of their memory presence.
Weak Reference Objects a...