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This is about the upcoming  Zack Snyder movie , where Ben Affleck is playing Batman. I just read an  that Christian Bale wanted to be Batman again. So I wanted to ask why wasn't he cast as Batman in this movie. I checked the Wikipedia entry but nothing suggests why Christian Bale was not there. Nolan is associated with the movie as an adviser and DC Entertainment is producing this one too. So sort of familiar turf, right? But how come Ben Affleck is the new Batman?  EDIT: I would like to add another interesting piece of information. Bale is aged 40 (born 1974) and Affleck is 42 (born 1970). So they have actually cast an older actor. Create a floating div on top of divs Does the lack of sleep affect my health? In the past month, I've been really busy with the university and stuff, and I don't sleep as much as I used to. I usually sleep 4-5 hours a night.  I haven't been doing that extensively ( I always kept a good sleeping routine), but can the lack of sleep affect my health on the long term ? grep a file, but show several surrounding lines? I would like to grep for a string, but also show the preceding five lines and the following five lines as well as the matched line. How would I be able to do this? In Python, you can do this:  import webbrowser webbrowser.open_new("http://example.com/")   It will open the passed in url in the default browser  Is there a ruby equivalent? Could the granting lag for each badge be added to the FAQ? Why do we need to discard one dummy variable? What is the correct name to use with /give for Lapis Lazuli? Iteration over std::vector: unsigned vs signed index variable What is the correct way of iterating over a vector in C++?  Consider these two code fragments, this one works fine:  for (unsigned i=0; i &lt; polygon.size(); i++) {     sum += polygon[i]; }   and this one:  for (int i=0; i &lt; polygon.size(); i++) {     sum += polygon[i]; }   which generates warning: comparison between signed and unsigned integer expressions.  I'm new in the world of C++, so the unsigned variable looks a bit frightening to me and I know unsigned variables can be dangerous if not used correctly, so - is this correct? The wavefunction $\Psi(x,t)$ for a free particle is given by  $$\Psi(x,t) = A e^{i(kx-\frac{\hbar k}{2m}t)}$$  This wavefunction is non-normalisable. Does this mean that free particles do not exist in nature?  Why then do we use free particles $\psi(\vec{x}) = e^{ikz}$, for example, in scattering theory? Please make the "last seen" entry optional Possible Duplicate:          Some people don't like being spied on by bosses or others, or revealing the frequency and intensity of their participation on SE sites.  Is an option to hide "seen" and similar fields on the summary page viable? Or, could the field be changed to day-level granularity? What is a word for a person who uses resources to the maximum? Is there a word (or words) for a person who uses all resources to the maximum; for example, a person who keeps on using pencils even if they are very small? Why does LD keep outputting "no version information available" On every loading of a lib, I get the error:     no version information available   This lib has been compiled on another PC (ubuntu 10.04) than the one running it (mandriva 2010.2).  $ ldd /usr/local/gnu-eabi-4.5.2/i686-pc-linux-gnu/arm-eabi/lib/libbfd-2.21.so /usr/local/gnu-eabi-4.5.2/i686-pc-linux-gnu/arm-eabi/lib/libbfd-2.21.so: /lib/libz.so.1: no version information available (required by /usr/local/gnu-eabi-4.5.2/i686-pc-linux-gnu/arm-eabi/lib/libbfd-2.21.so)  linux-gate.so.1 =&gt;  (0xffffe000)  libz.so.1 =&gt; /lib/libz.so.1 (0xb77a7000)  libc.so.6 =&gt; /lib/i686/libc.so.6 (0xb7655000)  /lib/ld-linux.so.2 (0xb787a000)   Edit: the workaround didn't work. $a, b, c$ are positive real numbers.   Prove that $$8abc\le (a+b)(b+c)(c+a)$$  I haven't really gotten anywhere, just tried to open up $(a+b)(b+c)(c+a)$ and got null. Are there strange attractors whose coordinates are "almost integers"? In the PHP manual, to show the syntax for functions with optional parameters, they use brackets around each set of dependent optional parameter. For example, for the  function, the manual reads:  string date ( string $format [, int $timestamp = time() ] )   Where $timestamp is an optional parameter, and when left blank it defaults to the  function's return value.  How do you go about creating optional parameters like this when defining a custom function in PHP? How to make a file (e.g. a .sh script) executable, so it can be run from a terminal Arduino only works in root I've installed Arduino but as the title says, I can only upload with sudo. And yes my user is part of the dialout group so that's the weird thing.   Arduino did function before on my system. What could be wrong?  Output ls -l:  ls -l /dev/ttyUSB* crw-rw-rw- 1 root dialout 188, 0 apr  2 09:23 /dev/ttyUSB0 Lightning Change Event Is there a way to catch the change event of a particular field/component? I saw on the AuraDocs that there is a valueChange event but trying to handle it makes the app throw an error on load. I was wondering if I could build some automatic field validation / search suggestions without relying on other js libraries. I hava Lenovo g580 laptop. I want to change disk to SSD drive, but I'm not sure if my laptop support SATA 3 (6Gbps).  I write following output:  dmesg | grep SATA [    3.190743] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 6 ports 6 Gbps 0x5 impl SATA mode [    3.199450] ata1: SATA max UDMA/133 abar m2048@0xd3617000 port 0xd3617100 irq 43 [    3.199455] ata3: SATA max UDMA/133 abar m2048@0xd3617000 port 0xd3617200 irq 43 [    3.518365] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [    3.857921] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)   Is that means I Can use SSD disk in SATAa 6Gbps mode?