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How do I connect to a specific Wi-Fi network in Android programmatically?
...networkId = wfMgr.addNetwork(wfc);
if (networkId != -1) {
// success, can call wfMgr.enableNetwork(networkId, true) to connect
}
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App Inventor 2 扩展 · App Inventor 2 中文网
...omponents can be distributed on the Web and loaded into App Inventor dynamically: they do not have to be built into the App Inventor system, and they can be imported into projects as needed. With extensions, the range of App Inventor apps can be virtually unlimited.
One use of extensions, for exa...
What's the false operator in C# good for?
...erride |, &, true and false in exactly the right way the compiler will call | and & when you write || and &&.
For example, look at this code (from http://ayende.com/blog/1574/nhibernate-criteria-api-operator-overloading - where I found out about this trick; archived version by @Bigg...
Node.js - use of module.exports as a constructor
...irst class citizens in JavaScript they to can act just like Objects (technically they are Objects). That said your question about using the new keywords has a simple answer: Yes. I'll illustrate...
Module exports
You can either use the exports variable provided to attach properties to it. Once req...
How do you convert a jQuery object into a string?
...r85461 That isn't a valid DOM node, though, so it would be wrong to try to call outerHTML on it to begin with. (Only a tiny subset of what can go in $(...) is a valid DOM node.)
– John Feminella
Feb 25 '15 at 17:50
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How do I limit the number of results returned from grep?
...rdless of
the presence of trailing context lines. This enables a calling
process to resume a search.
Note: grep stops reading the file once the specified number of matches have been found!
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How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess
...on state. It will skip a process if the process finishes before jobs -p is called. So if any of subprocess ends before jobs -p, that process's exit status will be lost.
– tkokoszka
Feb 8 '09 at 15:06
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How can I pass data from Flask to JavaScript in a template?
My app makes a call to an API that returns a dictionary. I want to pass information from this dict to JavaScript in the view. I am using the Google Maps API in the JS, specifically, so I'd like to pass it a list of tuples with the long/lat information. I know that render_template will pass these ...
How do I print the elements of a C++ vector in GDB?
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With GCC 4.1.2, to print the whole of a std::vector<int> called myVector, do the following:
print *(myVector._M_impl._M_start)@myVector.size()
To print only the first N elements, do:
print *(myVector._M_impl._M_start)@N
Explanation
This is probably heavily dependent on your ...
Permanently adding a file path to sys.path in Python
I had a file called example_file.py , which I wanted to use from various other files, so I decided to add example_file.py to sys.path and import this file in another file to use the file. To do so, I ran the following in IPython.
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