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Can I install Python 3.x and 2.x on the same Windows computer?
I'm running Windows and the shell/OS automatically runs Python based on the registry settings when you run a program on the command line. Will this break if I install a 2.x and 3.x version of Python on the same machine?
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Javascript objects: get parent [duplicate]
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}.init();
Inside the init function you can get the parent object simply calling this.
So we define the parent property directly inside the child object.
Then (optionally) we can remove the init method.
Finally we give the main object back as output from the init function.
If you try to get mai...
AngularJS: How to run additional code after AngularJS has rendered a template?
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Has this been deprecated? When I try this it actually calls just before the DOM is rendered. Is it dependent on a shadow dom or something?
– Shayne
Sep 23 '14 at 7:11
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Why is `[` better than `subset`?
...ect 'cyl' not found
because R no longer "knows" where to find the object called 'cyl'. He also points out the truly bizarre stuff that can happen if by chance there is an object called 'cyl' in the global environment:
cyl <- 4
subscramble(mtcars, cyl == 4)
cyl <- sample(10, 100, rep = T)
s...
Create empty file using python [duplicate]
....mknod("newfile.txt") (but it requires root privileges on OSX). The system call to create a file is actually open() with the O_CREAT flag. So no matter how, you'll always open the file.
So the easiest way to simply create a file without truncating it in case it exists is this:
open(x, 'a').close()...
How do I specify the Linq OrderBy argument dynamically?
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How can i dynamically decide to order by asc or desc
– Hitesh Modha
Oct 14 '15 at 11:18
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Proper URL forming with Query String and Anchor Hashtag
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?var=var#hash
everything after # is client side.
Also, look into url rewriting to get rid of ugly ?var=var
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Benefits of using the conditional ?: (ternary) operator
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I would basically recommend using it only when the resulting statement is extremely short and represents a significant increase in conciseness over the if/else equivalent without sacrificing readability.
Good example:
int result = Chec...
Create table in SQLite only if it doesn't exist already
....sqlite.org/lang_createtable.html:
CREATE TABLE IF NOT EXISTS some_table (id INTEGER PRIMARY KEY AUTOINCREMENT, ...);
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How to pass parameters correctly?
...nction needs to modify the original object being passed, so that after the call returns, modifications to that object will be visible to the caller, then you should pass by lvalue reference:
void foo(my_class& obj)
{
// Modify obj here...
}
If your function does not need to modify the ori...