Logical XOR operator in C++?
The != operator serves this purpose for bool values.
What’s the difference between identifying and non-identifying relationships?
An identifying relationship is when the existence of a row in a child table depends on a row in a parent table. This may be confusing because it’s common practice these days to create a pseudokey for a child table, but not make the foreign key to the parent part of the child’s primary key. Formally, the “right” way … Read more
Configuring so that pip install can work from github
You need the whole python package, with a setup.py file in it. A package named foo would be: And install from github like:
Gradient borders
WebKit now (and Chrome 12 at least) supports gradients as border image: Prooflink — http://www.webkit.org/blog/1424/css3-gradients/Browser support: http://caniuse.com/#search=border-image
Unity OnTriggerEnter2D not registering
There are four things I can think of which need to happen so that OnTriggerEnter gets called: The two objects’ colliders need to actually be overlapping. Just because their rendered pixels are overlapping, doesn’t mean their colliders are overlapping. This can be checked in the editor. Their colliders are indicated with a green outline in the Scene tab. If … Read more
Responsive font size in CSS
The font-size won’t respond like this when resizing the browser window. Instead they respond to the browser zoom/type size settings, such as if you press Ctrl and + together on the keyboard while in the browser. Media Queries You would have to look at using media queries to reduce the font-size at certain intervals where it starts breaking your design and creating scrollbars. … Read more
Where can I find php.ini?
The best way to find this is: Create a PHP (.php) file and add the following code: and open it in a browser. It will show the file which is actually being read! Updates by the OP: The previously accepted answer is likely to be faster and more convenient for you, but it is not always correct. … Read more
How do I merge a branch into a master in github?
Please do following set of commands in order to merge with the master, Assuming that you are in branch testBranch and you want to merge the changes with the master, First checkout to master branch, Now pull the latest changes in master, Merge with the testBranch Push the changes to master That’s it, you are done.
Plot logarithmic axes with matplotlib in python
You can use the Axes.set_yscale method. That allows you to change the scale after the Axes object is created. That would also allow you to build a control to let the user pick the scale if you needed to. The relevant line to add is: You can use ‘linear’ to switch back to a linear scale. Here’s what your code would … Read more
Algorithms in O(n^2) vs O(n) [duplicate]
What you are asking about is a topic in computer science known as Algorithm Complexity Analysis. It is a very important topic to consider when writing algorithms, or solutions, in your programs because it relates to run-time, or how fast your computations will run. Big-Oh, or O(n) relates to the upper-bound run-time for an algorithm … Read more