php operators && vs AND, || vs OR
'AND' vs '&&' as operator
How can I set the location (as it's picked up in CoreLocation services) in the iPhone Simulator? What is the best base to use? How to display citations in text grouped as [1-3] in stead of [1,2,3] what is the difference between - I make it to go and I make it go? What is the difference between sentences like these:     I make it to go.   I make it go.   or     You make me to cry.   You make me cry. Splitting a semicolon-separated string to a dictionary, in Python Was Harry Potter a direct descendant of Godric Gryffindor? Subscribe to tags I am interested in? How do I subscribe to the tags that I am interested in?  I like to get notified via email or so, when someone asks new questions or if someone responds to my questions. I understand that a black hole bends the fabric of space time to a point that no object can escape.   I understand that light travels in a straight line along spacetime unless distorted by gravity. If spacetime is being curved by gravity then light should follow that bend in spacetime.  In Newton's Law of Universal Gravitation, the mass of both objects must be entered, but photon has no mass, why should a massless photon  be affected by gravity in by Newton's equations?  What am I missing? Word order: "10 minutes more" or "10 more minutes"? Are there attacks that break collision resistance but not preimage resistance? A real nxn matrix always has a real eigenvalue when n is odd what do it mean by "A real nxn matrix always has a real eigenvalue when n is odd?" Shouldnt it be that regardless of odd or even there will always have a real root?  hope to hear from you guys soon:) I have fought the pumpkin moon and died like 3 times and made it to wave 7 or 6 whenever the pumpking first appears. I have full turtle armor and my primary melee weapon is a demon sickle. I also have the possessed hatchet, magnet sphere, and sniper rifle. I also have other gear like the Uzi. What should I replace, what should I take out, and what should I add? Thanks! I am curious about whether $|x|^p$ with $0&lt;p&lt;1$ satisfy $|x+y|^p\leq|x|^p+|y|^p$ for $x,y\in\mathbb{R}$.   So far my trials show that this seems to be right... So can anybody confirm whether this is right or wrong and give a proof or counterexample? loading a view in popup hi i'm trying to display a view in a popup but unable to get a solution. i tried   colorbox node module popup views integration module   Is there any better way to display a view as a popup ? Random integer in VB.NET I need to generate a random integer between 1 and n (where n is a positive whole number) to use for a unit test. I don't need something overly complicated to ensure true randomness - just an old-fashioned random number.  How would I do that? When going to any page of  with a new reputation gain, the achievements dropdown keeps showing a new badge green highlight:    And then trying to dismiss the notification by clicking on it gets rid of the green badge notification, but the +5 remains even after I've clicked away from the dropdown. How can I change an element's class with JavaScript? How do I diagnose the source of focus problem in a camera? Probably a novice question, but how do I correctly diagnose from a photo for what reason that camera wasn't able to focus properly?  It can be any 1 of the following   Unsteady hand Lens issue Metering Re-Calibration required in camera or ...   Is there a set of unsaid protocols that needs to be followed by a photographer?  Goal is to get a sharp and crisp image prior to editing.  [PS: I own a Nikon D5200.] Multiple Apple Developer Accounts How to tell the difference between linear and non-linear regression models? I was reading the following link on non linear regression . My understanding from reading the first section "Nonlinear Regression vs. Linear Regression" was that the equation below is actually a linear regression, is that correct? If so why?  $$y = b_1x^3 + b_2x^2 + b_3x + c$$  Am I also to understand that in non linear regression multicollinearity isn't an issue? I know that multicollinearity can be an issue in linear regression so surely if the model above is in fact a linear regression there would be multicollinearity?