WPF Button - how to create a hyperlink
How to open a web page from my application?
What if an abbreviation is at the end of a declarative sentence? Should I duplicate a full stop sign? What if an abbreviation is at the end of a declarative sentence? Should I duplicate a full stop sign? If the following sentence begins with a proper noun, not putting two periods may be confusing, in theory. Edit: It used to be 'contraction' instead of 'abbreviation'. FIELD_INTEGRITY_EXCEPTION: field integrity exception: unknown (invalid user or group: 005XXXXXXXXXXXX) I've a object called myobject__c. This object is private in OWD Setting.  Now when admin create a new record of this object then I want to share this record with a user(community user). For this I've written a code in trigger to create a sharing record of this object (myobject__Share).  But I am getting a problem of :-      FIELD_INTEGRITY_EXCEPTION: field integrity exception: unknown (invalid   user or group: 005XXXXXXXXXXXXX).   how can I solve this problem and second doubt is can we create share record for community user or not. Viewing computer screen through 3D glasses, why the asymmetry? I am non-EU citizen working in Germany. Can I travel to UK without a visa? I am from Non-EU country (from Nepal to be precise) and recently moved to Germany for work. I am applying for BlueCard. I would like to travel to UK later this year, can I go there without visa as I am resident in another EU country?  I can't find this information online. Any links/references will be much appreciated. How do HttpOnly cookies work with AJAX requests? JavaScript needs access to cookies if AJAX is used on a site with access restrictions based on cookies. Will HttpOnly cookies work on an AJAX site?   Edit: Microsoft created a way to prevent XSS attacks by disallowing JavaScript access to cookies if HttpOnly is specified. FireFox later adopted this. So my question is: If you are using AJAX on a site, like StackOverflow, are Http-Only cookies an option?  Edit 2: Question 2. If the purpose of HttpOnly is to prevent JavaScript access to cookies, and you can still retrieve the cookies via JavaScript through the XmlHttpRequest Object, what is the point of HttpOnly?  Edit 3: Here is a quote from Wikipedia:     When the browser receives such a cookie, it is supposed to use it as usual in the following HTTP exchanges, but not to make it visible to client-side scripts.[32] The HttpOnly flag is not part of any standard, and is not implemented in all browsers. Note that there is currently no prevention of reading or writing the session cookie via a XMLHTTPRequest. [33].   I understand that document.cookie is blocked when you use HttpOnly. But it seems that you can still read cookie values in the XMLHttpRequest object, allowing for XSS. How does HttpOnly make you any safer than? By making cookies essentially read only?   In your example, I cannot write to your document.cookie, but I can still steal your cookie and post it to my domain using the XMLHttpRequest object.  &lt;script type="text/javascript"&gt;     var req = null;     try { req = new XMLHttpRequest(); } catch(e) {}     if (!req) try { req = new ActiveXObject("Msxml2.XMLHTTP"); } catch(e) {}     if (!req) try { req = new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {}     req.open('GET', 'http://stackoverflow.com/', false);     req.send(null);     alert(req.getAllResponseHeaders()); &lt;/script&gt;   Edit 4: Sorry, I meant that you could send the XMLHttpRequest to the StackOverflow domain, and then save the result of getAllResponseHeaders() to a string, regex out the cookie, and then post that to an external domain. It appears that Wikipedia and ha.ckers concur with me on this one, but I would love be re-educated...  Final Edit: Ahh, apparently both sites are wrong, this is actually a . IE6 &amp; 7 are actually the only browsers that currently fully support HttpOnly.  To reiterate everything I've learned:   HttpOnly restricts all access to document.cookie in IE7 &amp; and FireFox (not sure about other browsers) HttpOnly removes cookie information from the response headers in XMLHttpObject.getAllResponseHeaders() in IE7. XMLHttpObjects may only be submitted to the domain they originated from, so there is no cross-domain posting of the cookies.   edit: This information is likely no longer up to date. docky crashes from time to time for me. How can I make it restart automatically after it crashed? Can you fake a closed question? [‌closed] I just had a random thought; what if you append "[closed]" to the end of a question title. Is it filtered out, or in some way disallowed?  If you are seeing this, it isn't. It could potentially be used for some trickery, right? Or maybe not. I don't know, that's why you're here: discuss!  EDIT: Just a recap: Juan Manuel edited and removed "[closed]" from the end of the title and then answered (see below) - but it is technically possible.  Edit 2: Looks like it's still possible, if you play silly tricks with Unicode. (There's a  character in the new title.) The series $\sum_{n=2}^{\infty }\frac{1}{\log (n!)}$ I'm trying to find out whether this Series $\sum_{n=2}^{\infty } a_{n}$ converges or not when $$a_{n}=\frac{1}{\log (n!)}$$  I tried couple of methods, among them: d'Alembert $\frac{a_{n+1}}{a_{n}}$,   Cauchy condensation test $\sum_{n=2}^{\infty } 2^{n}a_{2^n}$, and they both didn't work for me.  Edit: I can't use stirling, and integral.  Thank you Are getters and setters poor design? Contradictory advice seen Why is it dangerous to initialize weights with zeros? Is there any simple example that demonstrates it? When should I use a struct rather than a class in C#? When should you use struct and not class in C#? My conceptual model is that structs are used in times when the item is merely a collection of value types.  A way to logically hold them all together into a cohesive whole.  I came across these rules :   A struct should represent a single value. A struct should have a memory footprint less than 16 bytes. A struct should not be changed after creation.   Do these rules work? What does a struct mean semantically? iPhone call log / history I use multiple displays, and the available options for Spaces that I am aware of allow surprise Space-switching, even when working in a completely different space.  Ideally, interacting with the Dock will only affect the same Space on the same display on which I used the Dock. This means:   If app clicked in Dock, and no copy of app is running on any space, then start the app and confine it to the current Space. If app clicked in Dock, and the program is already running in another Space, then either 1) open a new window if the program allows this, or 2) silently move the app to the current Space without disturbing or changing any other Space or display. If app clicked in Dock, and the program is already running in the current Space, then change focus to the app.   Specifically: - Clicking an icon in the Dock should rarely affect any other Space. - Clicking an icon in the Dock must never affect which Space is displayed on which display  OS X Yosemite 10.10.2, MacBook Pro 2012. (Dock set to auto-hide, and pops up at the bottom of any screen when I put the mouse there.) Let $a,b,m,n$ be positive integers such that g.c.d.$(a,b)=1$ and $a^m+b^m|a^n+b^n$ , then is it true that $m$ divides $n$ ? I'm attempting to make an elevation profile from a DEM in ArcMap using the Interpolate Line tool.  I've done this before, and it has worked great--basically I just draw a line with Interpolate Line, then click Profile Graph to get the elevation profile.  However, for some reason, it's not working now: when I draw out my line, nothing shows up on the map.  I don't get a line, and I can't figure out what I'm doing wrong.  I've searched online for an answer, but to no avail.    Any tips? Can I include the completion of Udacity and Coursera classes I have attended in an academic CV? Can I include in my academic CV that I have attended and completed the  and  classes I have been taking? I understand that these are not anything major, but the courses definitely gives a good overview and starting formal study on the subject becomes less cryptic. If I can include them without any negative impacts, then under what section should I include them? My awk program to change spaces into tabs doesn't work How to write a shell script which uses awk to read in the data file students.txt and output the data in the tabbed format as shown:  Surname Forename MSc Stream Date of Birth Smith John IT 15.01.1986 Taylor Susan IT 04.05.1987 Thomas Steve MIT 19.04.1986    Do not worry if tabbed columns don’t line up. The distance between each of (Surname, Forename, MSc Stream and Date of Birth) column is one tab.   Question:  Why this bellow code doesn't work for me?  awk 'BEGIN {IFS=" "} {OFS="\t"} {print $1,$2,$3,$4}' students.txt Python 3 with QGIS on Mac? I need to start learning Python, and I want to learn with version 3.x. I understand that QGIS--at least some plug-ins--relies on Python and Tcl/Tk, and probably on specific versions. Assuming that QGIS is dependent on Python 2, can anyone tell me how to set up parallel installations of Python 3 and Tcl/Tk such that QGIS will have what it needs and I can use Python 3 for other purposes? I have downloaded the offline (consumer, i.e. not msi package) installer for Google Chrome. But when I run it, it tries to contact a Google server to check for a newer version. If it finds it, it will download that first, and then install that version. It doesn't use the version that is already there, as part of the EXE file. For me, that defeats the point of having an offline installer. I keep a repository of all the free and purchased software locally, so that I can install them quickly whenever I need to. But as more and more people get access to broadband Internet connections, many developers and companies are pushing for offline installers with new releases. Many software titles, like Google Chrome, are almost exclusively distributed with online installers.  File name: ChromeStandaloneSetup.exe File version: 1.3.21.115 Size: 36.6 MB (38 416 368 bytes) SHA-1: 2393BAB7F408DC8D30F039FCA5D6B45600A0C4E7   How do I install Chrome as is, without automatically checking for and getting a newer version?  Will  work with Chrome installer? Is there a switch to disable version check when running the installer?  Update:  The "duplicate" question linked to below points out File Hippo as a possible repository where you one can get previous versions of Chrome. They do have a healthy listing of pretty much every single Chrome version ever released on Windows, both beta, dev and stable versions. Unfortunately they don't host the installer files, they only redirect to Google servers for downloads, which only spits out the installers for the latest versions of Chrome. It's not just File Hippo, I also tried downloading an older version of Chrome from CNET Downloads, and they too just redirect you to Google servers for download.  For whatever the reason (security related probably), Google doesn't like anyone to install an older version of Chrome on any system. Apparently not even your common source for downloading an older version of a software, like the CNET Downloads, not even they are allowed to host the Chrome installer files on their own servers. The redirects to Google is probably dictated by Google.     Google is a dictator!   They don't even allow full standalone offline installers to be installed as is, without checking for newer version. I tried running the installer from cmd with some of the command line switches used for Chromium. I only ended up with errors.    The business oriented msi installer (GoogleChromeStandaloneEnterprise.msi) might have some additional command line options you can use, but I wouldn't know if there is one that disables the check for a newer version. I have yet to find a complete list of switches you can use. The only one I've found so far is /update but that only does the opposite thing. So I'll give up here and go back to the trusty Firefox. Show that if $g \circ f$ is injective, then so is $f$. The Problem:  Let $X, Y, Z$ be sets and $f: X \to Y, g:Y \to Z$ be functions.  (a) Show that if $g \circ f$ is injective, then so is $f$.  (b) If $g \circ f$ is surjective, must $g$ be surjective?  Where I Am:  So, I really have trouble with these, for some reason. I can draw pictures and make sense of the problems, but writing down proofs is very difficult for me.   Basically, for (a), I ended up with some complicated statement involving an implication implying another implication and then tried to derive a contradiction. It just got so convoluted that I couldn't make sense of it anymore, and I know there's a quick, elegant way to show it.  For (b), I know that $g$ need not be surjective. Once again, though, proving it directly from definitions has given me a bit of a headache.  Any help here would be appreciated. Thanks in advance.  The Proofs!  Ok, I did it. Thanks for the help, everyone! Let me know if there's anything wrong with these proofs, or if they could bet any better.  (a) Suppose $f$ is not injective. Then $$ f(x_1)=f(x_2) \implies x_1 \ne x_2 \text{        }(*).$$ Let $f(x_1)=y_0=f(x_2)$ and let $g(y_0)=z_0$. Then $$ (g \circ f)(x_1) = (g \circ f)(x_2) = g(y_0) = z_0. $$ Since $g \circ f$ is injective, $$ (g \circ f)(x_1) = (g \circ f_2) \implies x_1 = x_2. $$ However, this contradicts $(*)$. Therefore, $f$ must be injective.  (b) Suppose $g$ is not surjective. Then  $$ \forall y \in Y, \exists z \in Z \text{ such that } g(y) \ne z \text{         }(**).$$  Since, $g \circ f$ is surjective,  $$ \forall z \in Z, \exists x \in X \text{ such that } g(f(x)) = z \text{       } (***). $$  Let $f(x) = y$. Then,  $$ g(f(x)) = g(y) = z. $$  Because of $(***)$, this is true for all $z \in Z$, which contradicts $(**)$. Therefore, $g$ must be surjective.