Asterisk in Objective-C
What does the Asterisk * mean in Objective-C?
What's the difference between "uname -r" and "uname -v"? Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 32) can't enable wi-fi Windows is unable to detect disk partitions I installed Windows 8.1 Preview using the DVD yesterday after wiping off my HDD (I made a backup prior to that). While installing Windows I created only the partitions necessary to install Windows (System Reserved, C: shown in second screenshot). Further I installed Ubuntu 13.04. During Ubuntu installation I created necessary extended partitions (for OS, swap and home directory - all ext4 except swap). Later within Ubuntu I created a NTFS partition at the end (partition 4 in first screenshot). This was a primary partition. The objective behind this was that the partition must be accessible from Windows.  While Ubuntu disk utility reports the partitioning just fine (as below)  Windows disk management is showing all partitions as primary.   Thus within Windows I am able to access only C:! What puzzles me is one can't create so many primary partitions! How can I solve this issue? Who invented "dooblidoo"? The word  is used by several different youtube channels as a different word for the youtube description bar. I've seen it used by the  and by .  Who was first to use and invent the term? Search results showing questions without the searched for tag in results Recently, I was surfing on stackoverflow.com &amp; I have found one bug in Question filter.  I was looking under the java tag and yet I saw questions which were not tagged java    The incorrectly shown question was This is my first question.   Let $a_1, a_2,\ldots, a_k$ be natural numbers $\leq n$ with $m$ prime factors.  Let $p_1, p_2, \ldots, p_r$ be the prime numbers $\leq n$.   Let $$C_{m,n} = \frac{\sum_{i=1}^{k}a_i}{\sum_{i=1}^{r}p_i}$$ Does the following limit exist when $m\geq 2$? Obviously, when $m=1$,  $C_{1,n}=1$.  $$\lim_{n\to \infty} C_{m,n}$$  I have some guesses but not defendable enough.  My best,  The FM. Distance from a point to a plane in normed spaces How can we calculate the distance from a point to a plane in normed spaces ? where we are not inner product, for example:  Calculate the distance in $(C[0,1],||\cdot||)$ endowed with the supremum norm $$||f||=\sup_{t\in[0,1]}|f(t)|$$ from the function $f(t)=t^2$ to the linear hull of the functions $g(t)=t$  and  $h(t)=\sin(t)$  Any hints would be appreciated. Paying off student loan or using that money for a downpayment on a house Is there any other way to do a clean install withot formatting /home? I think my Ubuntu is a bit broken from messing around with it.  Unfortunately during installation, I did not make a separate partition for /home. Now I need to re-install but want to keep my music and films.  Any ideas... proving roots of equation $x^2+x+4f=0$ are real. Let $a,b,c$ be three positive real numbers such that $a+b+c=1$. Let $f=\min(a^3+a^2bc, b^3+ab^2c,c^3+abc^2)$. Prove that the roots of the equation $x^2+x+4f=0$ are real. How can I benchmark my HDD? I've seen commands to benchmark one's HDD such as this using dd:  $ time sh -c "dd if=/dev/zero of=ddfile bs=8k count=250000 &amp;&amp; sync"   Are there better methods to do so than this? Short story as a letter to original colonisers of earth One of the problems with Bohr's theory to describe the hydrogen atom, was that the electron orbiting around the nucleus has an acceleration. Therefore it radiates and loses energy, until it would collapse with the nucleus.  Now Schrödinger describes the electron as a wave function. His theory is able to describe all atoms (in contrast to Bohr's model), but how is the radiation problem solved? I understand that the wave has not an exact position in the time anymore. But the electron still "moves", so it has an acceleration anyway (because of vibrations or so).   Why is in this theory the electron not radiating anymore? And if it is, why doesn't the atom collapse? What does different focal length offer me? Table with actions per row What is the command line way of sending files to the recycle bin? Is there a command line program that can send files to the recycle bin? This is on XP and Vista. How can I create an executable JAR with dependencies using Maven? how to decode this JSON string? Sometimes when reading through user comments on a particular answer, some usernames that appear like user[digit] e.g user12345 are not links. Is this a known behaviour or any other thing I am not aware of? What does the @ symbol before a variable name mean in C#? Possible Duplicate:          I understand that the @ symbol can be used before a string literal to change how the compiler parses the string.  But what does it mean when a variable name is prefixed with the @ symbol?