Movie bullet magic
Are real guns used in movies?
What is the "maybe" caller id suggestion in the call log based on? I got a call from a phone number that is not stored in my address book, and in the call log, under the number, a name was suggested: "Maybe: X" (where X is the guessed name).  Where is this guess coming from? Obtaining zero-length string from strtok() Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc I've heard that SELECT * is generally bad practice to use when writing SQL commands because it is more efficient to SELECT columns you specifically need.  If I need to SELECT every column in a table, should I use   SELECT * FROM TABLE   or   SELECT column1, colum2, column3, etc. FROM TABLE   Does the efficiency really matter in this case? I'd think SELECT * would be more optimal internally if you really need all of the data, but I'm saying this with no real understanding of database.  I'm curious to know what the best practice is in this case.  UPDATE: I probably should specify that the only situation where I would really want to do a SELECT * is when I'm selecting data from one table where I know all columns will always need to be retrieved, even when new columns are added.   Given the responses I've seen however, this still seems like a bad idea and SELECT * should never be used for a lot more technical reasons that I ever though about. What happens when I connect a 2 amp charger instead of the 0.7 amp charger provided? Possible Duplicate:             I have a phone with 0.7 amp charger. I also have a Galaxy Nexus with a 2 amp charger.  If I connect the 2 amp charger into my phone, will my phone blow up? Proof: Every convergent sequence of real numbers is bounded Custom Button on Lightning Experience I created a custom button Send Email in Lightning Experience. The problem is that button in visible in feed section layout, but I want to put it in the upper right corner of page layouts near Edit, Clone, Delete ecc....  How Can I do that? Thanks  I add an image that explain the situation.    EDIT: I would like to explain you better my problem.  I have created three custom quick action:   I have added them to the case page Layout as you can see    I would like to understand the reason why I don’t see these three custom action in the Page Layout in the section in the top right How to fix apt: Signature by key uses weak digest algorithm (SHA1)? How to prove $\lim_{n \to \infty} \sqrt{n}(\sqrt[n]{n} - 1) = 0$? What is object serialization? Legality of using names in a game? The definite and zero article with the word "civilization" What is *.pkinfo file? What is a *.pkinfo file?   Google Search results talk about Package Info files and how they contain map documents and layers, so I don't see how this is different from a .mpk file.    I also have not found anything about how to create a *.pkinfo file. How can I prove this inequality in a triangle: $\frac{1}{(b+c-a)} +\frac{1}{(c+a-b)} +\frac{1}{(a+b-c)} \gt \frac{1}{a} +\frac{1}{b} +\frac{1}{c}$? If $a,b,c$ are the sides of a triangle then show that- $\frac{1}{(b+c-a)} +\frac{1}{(c+a-b)} +\frac{1}{(a+b-c)} \gt \frac{1}{a} +\frac{1}{b} +\frac{1}{c}$  I got this problem from an old book on algebra. I've been trying for a long time but can't reach the answer.  My try on the question-  We know that in a triangle, the sum of two sides is always greater than the third side  $b+c\gt a$ $\implies$ $b+c-a \gt 0$  $c+a\gt b$ $\implies$ $c+a-b\gt 0$  $a+b \gt c$ $\implies$ $a+b-c\gt 0$  Also,  $\frac {1}{(b+c)} \lt \frac{1}{a}$  $\frac{1}{(c+a)} \lt \frac{1}{b}$  $\frac{1}{(a+b)} \lt \frac{1}{c}$  Adding,  $\frac{1}{(b+c)} + \frac{1}{(c+a)} +\frac{1}{(a+b)} \lt \frac{1}{a} + \frac{1}{b} + \frac{1}{c}$  How do I proceed further? All genuine answers are welcome :) Background image shows in front of 3D objects, not behind them. I've done a quick 3D track in blender and I'm trying to render my output, but the plate I used to track is showing up over my 3d objects.  I want to render the objects in the scene with an alpha channel and comp them over the plate I tracked. My renders however, are covered by the aforementioned plate.  Un-checking "Background Images" in the camera properties (only removes it from the viewport) isn't doing it for my render outputs.  Working on some production tests and am not really proficient with the software yet, my apologies in advance. What's the difference between real and effective aperture? I understand that the simple idea that f-stop is focal length divided by aperture really applies to a simple single-glass lens, not the compound lens systems used to provide good image quality in modern lenses.  I've heard that in this case, what matters is the ratio of the aperture as it appears through the front element. Why the front element, and not the back (which would be the "point of view" of the sensor or film)?  What about for effects such as diffraction? Does the literal physical aperture size matter, or is it the effective size? What are the rules for calling the base class constructor? How to select kernel for SVM? This is somewhat of a beginner's question, but how does one interpret an exp(B) result of 6.012 in a multinomial logistic regression model?  1) is it 6.012-1.0 = 5.012 = 5012% increase in risk?  or  2) 6.012/(1+6.012) = 0.857 = 85.7% increase in risk?  In case both alternatives are incorrect, can someone please mention the correct way?  Ive searched many resources on the internet and I get to these two alternatives, and I am not entirely sure which one is correct. So I'm getting my listItems with a Camlquery, but i want to calculate the avg of the "price" rows  This is the code I've used so far:  function VisaLista() {     namn = document.getElementById("txtNamn");     var camlQuery = new SP.CamlQuery();     camlQuery.set_viewXml(     "&lt;Where&gt;" +     "&lt;And&gt;" +     "&lt;Eq&gt;&lt;FieldRef Name='Title'/&gt;&lt;Value Type='Text'&gt;" + namn + "&lt;/Value&gt;&lt;/Eq&gt;" +     "&lt;Or&gt;" +     "&lt;Eq&gt;&lt;FieldRef Name='Prioritet'/&gt;&lt;Value Type='Text'&gt;Hög&lt;/Value&gt;&lt;/Eq&gt;" +     "&lt;Eq&gt;&lt;FieldRef Name='Status'/&gt;&lt;Value Type='Text'&gt;Startad&lt;/Value&gt;&lt;/Eq&gt;" +     "&lt;/Or&gt;" +     "&lt;/And&gt;" +     "&lt;/Where&gt;");     listItems1 = list.getItems(camlQuery);     clientContext.load(listItems1);     clientContext.executeQueryAsync(OnSuccessVisa, OnFail); } function OnSuccessVisa() {     var listEnumerator = listItems1.getEnumerator();     var elmt = 0;     while (listEnumerator.moveNext()) {         var currentItem = listEnumerator.get_current();         elmt = (currentItem.get_item('_x0072_zb6'));          var sum = 0;         for (var i = 0; i &lt; elmt.length; i++) {             sum += parseInt(elmt[i], 10);         }          var avg = sum / elmt.length;          document.write("The sum of all the elements is: " + sum + " The average is: " + avg);     }     $("#Kategori1").text = "Medelvärdet för dessa ordrar: " + avg }   I am getting following error     "Cannot get the value length of null - at elmt, line 43 Category-theoretic limit related to topological limit?