I'm looking to take a spontaneous trip for a long weekend. The date is flexible and the destination can be anywhere in the world. Is there a site that would allow me to search airfares within a date range, while keeping the destination parameters open?
Several airline and trip planning sites will allow you to check "I am flexible with my dates" or a similar option.  Is there any way to also search more broadly for location?  For example, if you wanted to leave from YYZ or YKF and arrive at any airport in California, can a search for such flights be done somehow?  I ask because when I plan plane trips, I want the lowest price.  I'm OK with leaving a day or two later if I save $200 (same with the return trip).  There are 3 airports within 80 km of me, I'll leave from the one with the cheapest flight. And I'm also OK with changing the trip to spend time exploring San Francisco instead of lying on the beach near San Diego, and that sort of thing.  Normally this would take dozens of searches, but I'd like to see it all at once.
How to stop a sponge cake (chiffon cake) from deflating/sinking? How to make the window full screen with Javascript (stretching all over the screen) Three files have suddenly appeared in my home directory, called "client_state.xml", "lockfile", and "time_stats_log". The last two are empty. I'm wondering how they got there. It's not the first time it has happened, but the last time was weeks ago; I deleted the files and nothing broke or complained. I haven't been able to think of what I was doing at the time reported by stat $filename. Is there any way I can find out where they came from?  Alternatively, is there a way to monitor the home directory (but not sub-directories) for the creation of files? How do I get transparency to work with the Principled BSDF shader? How do I get the Cycles Principled BSDF shader to support a base color image such as a 32bit png with alpha or a tga with an alpha channel, and get the transparency to work. I don't see anywhere on the Principled BSDF shader that handles transparency.  Without success, I have tried:   Properties Editor>Render tab>Film rollout>Transparent Properties Editor>Material tab>Settings rollout>Viewport Alpha (changing to other than Opaque). Adding a Transparent BSDF and Diffuse BSDF after the base color image node and using a Mix Shader to combine them. How to circumvent using an out parameter in an anonymous method block? The following method does not compile. Visual Studio warns "An out parameter may not be used within an anonymous method". The WithReaderLock(Proc action) method takes a delegate void Proc().  public Boolean TryGetValue(TKey key, out TValue value) {     Boolean got = false;     WithReaderLock(delegate     {         got = dictionary.TryGetValue(key, out value);     });     return got; }   What's the best way to get this behavior? (Please refrain from providing advice on threadsafe dictionaries, this question is intended to solve the out parameter problem in general). CW complex such that action induces action of group ring on cellular chain complex. Let $X$ be a space that satisfies the hypotheses used to construct a universal cover $\overline{X}$. Let $\pi = \pi_1(X)$ and consider the action of the group $\pi$ on the space $\overline{X}$ given by the isomorphism of $\pi$ with $\text{Aut}(\overline{X})$. Let $A$ be an abelian group and let $\mathbb{Z}[\pi]$ act trivially on $A$, $a \cdot \sigma = a$ for $\sigma \in \pi$ and $a \in A$.  Now, assume that $X$ is a CW complex. How do I see that $\overline{X}$ is a CW complex such that the action of $\pi$ on $\overline{X}$ induces an action of the group ring $\mathbb{Z}[\pi]$ on the cellular chain complex $C_*(\overline{X})$ such that each $C_q(\overline{X})$ is a free $\mathbb{Z}[\pi]$-module and$$C_*(X; A) \cong A \otimes_{\mathbb{Z}[\pi]} C_*(\overline{X})?$$ how to run a winform from console application? How do I create, execute and control a winform from within a console application? I need to find algorithm that can calculate centroid A (aka gravity center, geometric center, center of mass) from the figure where circles T1,T2,T3,T4,T5,..,Tn intersect AND length of line R from centroid to farthest corner of mentioned figure   Following information is given:   T1   Latitude    =   56.999883   Longitude   =   24.144473   Radius  =   943 T2   Latitude    =   57.005352   Longitude   =   24.151168   Radius  =   857 T3   Latitude    =   57.005352   Longitude   =   24.163356   Radius  =   714 T4   Latitude    =   56.999042   Longitude   =   24.168506   Radius  =   714 T5   Latitude    =   56.994226   Longitude   =   24.15709    Radius  =   771   Result should look like this:  A Latitude = XX.XXXXXXX    Longitude = XX.XXXXXXX  Radius = XX    As you probably already figured out, I am working on software that can find device location by closest Wifi Access Points or Mobile Base stations, as number of access points or base stations might change, I need an algorithm that can adapt to uncertain amount of points.  There are some similar questions  and , but none of them exactly answers to my question. 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.] Let $M$ be an A-module and $f \in \text{End}(M)$ an idempotent endomorphism. Show that $M = \ker(f) \oplus \ker (f-\text{id}_M)$. I don't know how to approach this exercise, using only properties of modules and direct sums, without projections. Can you help me? Thanks in advance. Create subdomains on the fly with .htaccess (PHP) I am looking to create a system which on signup will create a subdomain on my website for the users account area.   e.g. johndoe.website.com  I think it would be something to do with the .htaccess file and possibly redirecting to another location on the website? I don't actually know. But any information to start me off would be greatly appreciated.  Creating a sign up area is not the problem - I have done this many a time. I am just unsure where to start with the subdomain. Prove that free modules are projective Sort arrays of primitive types in descending order I've got a large array of primitive types (double). How do I sort the elements in descending order?  Unfortunately the Java API doesn't support sorting of primitive types with a Comparator.  The first approach that probably comes to mind is to convert it to a list of objects (boxing):  double[] array = new double[1048576];     Arrays.stream(array).boxed().sorted(Collections.reverseOrder())…   However, boxing each primitive in the array is too slow and causes a lot of GC pressure!  Another approach would be to sort and then reverse:  double[] array = new double[1048576]; ... Arrays.sort(array); // reverse the array for (int i = 0; i &lt; array.length / 2; i++) {      // swap the elements      double temp = array[i];      array[i] = array[array.length - (i + 1)];      array[array.length - (i + 1)] = temp; }   This approach is also slow - particularly if the array is already sorted quite well.  What's a better alternative? How to host a single website on multiple servers? I'm planning on releasing an iOS app that downloads video from my server. If hundreds of people on the launch day try to do this, then my website and the services that my server provides will clearly go down. How do you host a website on multiple servers? When someone tries to access my site, how is their request passed to an available server? How do Apple and Google do it? Thanks for your help. I'm having some trouble with the following sentence:     Since he had arrived, he had seen the rule broken more than once.   For some context, the text itself is a short story and I'm writing it in past tense. Does this mean that the presence of a past simple verb is "implicit", in a way, to the text itself? Does using the word "since" change anything (I know that it is usually supposed to be followed by a past simple verb, but I'm not sure of any exceptions to this)? Why does strcmp() return 0 when its inputs are equal? When I make a call to the C string compare function like this:  strcmp("time","time")  It returns 0, which implies that the strings are not equal.  Can anyone tell me why C implementations seem to do this? I would think it would return a non-zero value if equal. I am curious to the reasons I am seeing this behavior. How was the torque-force relationship discovered Is the set of all functions $f:Z_+\rightarrow Z_+$ that are eventually constant countable. Before Mavericks, I could use /etc/launchd.conf file to change maximum system resource consumption, for example:  limit maxfiles 16384 unlimited limit maxproc 16384 unlimited   It no longer works in Mavericks.  What is the correct way to do it in the recent version of OS X? What does "mostly" modify? "My friends are mostly non-smokers."  Is "mostly" a focusing adverb that modifies "non-smokers"?