how can i put an image into select?
How to add images in select list?
Is there any software package to solve the linear regression with the objective of minimizing the L-infinity norm. Why can't helicopters reach mount everest? What are uses of the C++ construct "placement new"? Assume a table structure of MyTable(KEY, datafield1, datafield2...).  Often I want to either update an existing record, or insert a new record if it doesn't exist.  Essentially:  IF (key exists)   run update command ELSE   run insert command   What's the best performing way to write this? Factoring $-3x^2 - 2xy + 8y^2 + 11x - 8y - 6$ For those who duplicated my previous question - ; am NOT asking how to install Skype for God's sake!!   The question was rather - I already have Skype installed, the thing is there is no possible option for me to do group video call or group screen share. The interface itself resembles the times when Skype was newly born. While on Windows, Skype's latest version is around 6.(something), here it's only 4.3. In Windows group video call is now free on Skype, here I can't even do video call! I think this is a major drawback for an otherwise so good OS! Is there anything that can be done about it?  Thanks for any help!  For those who don't have an answer for me, I still thank you for at least understanding my question!!  Have a good day! I tried logging in with a Google account, but I got the following error: How do I remove a file named "NUL" on Windows? I have a Windows XP box (NTFS filesystem) on which I found a file named NUL. I have not been able to remove this file in any usual way. The file appears to be owned by Administrator in the SYSTEM group, unlike any other file in the same directory (the other files are owned by my user id).  How do I get rid of this file? Where did it come from? Are there constants in JavaScript? Is there a way to use constants in JavaScript?  If not, what's the common practice for specifying variables that are used as constants? SharePoint online REST: Get users profile properties I'm looking for some help with a REST call I'm attempting to make in SharePoint Online.  I'm doing an add-in that gives me the name, birhday and photo property of all user in user profiles    I tried with this code   var siteUrl = _spPageContextInfo.siteAbsoluteUrl;     Console.log(siteUrl);     $.ajax({         url: siteUrl + "/_api/SP.UserProfiles.PeopleManager/GetMyProperties",         method: "GET",         headers: { "Accept": "application/json; odata=verbose" },         success: function (data) {             console.log(data);         },         error: function(error) {             console.log(error);         }     });   but I only get current user profile properties, what I need is all user profiles properties for all users, how can i achieve that?  Thanks in advance! Iterating through a Collection, avoiding ConcurrentModificationException when removing objects in a loop In an integral domain every non-zero prime ideal is invertible implies every non-zero proper ideal is invertible. Text processing - join every two lines with commas I have more than 1000 lines in a file. The file starts as follows (line numbers added):  Station Name Station Code A N DEV NAGAR ACND ABHAIPUR AHA ABOHAR ABS ABU ROAD ABR   I need to convert this to a file, with comma separated entries by joining every two lines. The final data should look like  Station Name,Station Code A N DEV NAGAR,ACND ABHAIPUR,AHA ABOHAR,ABS ABU ROAD,ABR ...   What I was trying was - trying to write a shell script and then echo them with comma in between. But I guess a simpler effective one-liner would do the job here may be in sed/awk.  Any ideas? How do I extract text that lies between parentheses (round brackets)? I have a string User name (sales) and I want to extract the text between the brackets, how would I do this?   I suspect sub-string but I can't work out how to read until the closing bracket, the length of text will vary. How to Mark NTFS filesystem dirty from *NIX/Linux? Can I disable charging peripherals via USB? I have an external DAC with it's own source of power. However when I connect it to the phone, it drains the phones battery. Is it possible to disable charging via USB on a rooted phone? Or at least slow it down?  My phone is Samsung Galaxy S3, Android 6, CyanogenMod I've noticed the text of the Hot Meta Posts box is not within its limits. I guess this would happen for any question with a word that's long enough: Can you prove that if $p$ is a prime greater than $5$, then the sum of the squares of the quadratic nonresidues modulo $p$ is divisible by $p$?  Note that I have just proved that the sum of the quadratic residues modulo $p$ is divisible by $p$ for $p$ greater than $3$. How can I make a .jar file executable? I'm trying to run a jar application under Ubuntu, so I installed OpenJDK Java 7 Runtime, but when I open this application I got this message :     The file '/home/aimad/Programms/jMerise/JMerise.jar' is not marked as   executable.  If this was downloaded or copied from an untrusted   source, it may be dangerous to run.  For more details, read about the   executable bit. I am planning to visit London for 6 days from the US. I have given my biometrics and when I was preparing to mail my documents to the UK visa processing center in the US, I used this link from the UK government website to cross-check the documents to be sent to the processing center.     (Guide to supporting documents).  Something that really surprised me was in Section 4 (documents that should NOT be sent along with the package) was hotel bookings and flights bookings.     Section 4: documents you should not send unless specifically requested      This page provides guidance on the types of documents that are not required to consider your application.         hotel bookings   flight bookings      Typically I have always been asked to provide my travel plans, accommodation plans and proof of them. This is the first time that travel plans and accommodation plans are not asked to be sent. What might be the reason behind it? This really confuses me. Any help in clearing my confusion would be greatly welcome.