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Check if Python Package is installed
What's a good way to check if a package is installed while within a Python script? I know it's easy from the interpreter, but I need to do it within a script.
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How to enable CORS in AngularJs
I have created a demo using JavaScript for Flickr photo search API.
Now I am converting it to the AngularJs.
I have searched on internet and found below configuration.
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How does facebook, gmail send the real time notification?
...ty interesting.
A common method of doing such notifications is to poll a script on the server (using AJAX) on a given interval (perhaps every few seconds), to check if something has happened. However, this can be pretty network intensive, and you often make pointless requests, because nothing has ...
Hibernate - A collection with cascade=”all-delete-orphan” was no longer referenced by the owning ent
...shcode have bitten me a few times with Hibernate. Instead of updating the title of the question with "[Solved]" you should go ahead and post your answer and then mark it as the accepted answer.
– brainimus
Apr 11 '11 at 13:47
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Rename multiple files in a directory in Python [duplicate]
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@Jeff I found it much easier to save the script and place it in the directory I would be running it in. This way, the os.rename method works correctly. The disadvantage is you might end up renaming the script itself. Instead of using . as the dir, you could make a v...
Get index of selected option with jQuery
...ave selectedIndex property. Adding [0] converts the jquery object to a javascript object which has the selectedIndex property. This example won't work without [0]
– Aram
May 21 '14 at 23:28
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java.lang.IllegalArgumentException: View not attached to window manager
...");
return;
}
mDialog = new AlertDialog(this)
.setTitle("title")
.setMessage("This is DialogTest")
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog...
How can I use “sizeof” in a preprocessor macro?
...e */
int main(void) { printf("%zd", sizeof(int); }
Compile that. Write a script in your favorite scripting language, which runs the above C program and captures its output. Use that output to generate a C header file. For example, if you were using Ruby, it might look like:
sizeof_int = `./sizeof...
Set custom HTML5 required field validation message
...ction(e) {
e.target.setCustomValidity("Please enter Room Topic Title");
};
}
})
I tested this in Chrome and FF and it worked in both browsers.
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Nodejs Event Loop
...Eio is a library to perform input output asynchronously. It handles file descriptors, data handlers, sockets etc. You can read more about it here here.
LibUv is an abstraction layer on the top of libeio , libev, c-ares ( for DNS ) and iocp (for windows asynchronous-io). LibUv performs, maintains and...