await in WPF doesn't return to UI Thread
The calling thread cannot access this object because a different thread owns it
I am looking for a way to identify primitives types in a template class definition.  I mean, having this class :  template&lt;class T&gt; class A{ void doWork(){    if(T isPrimitiveType())      doSomething();    else      doSomethingElse();  } private: T *t;  };   Is there is any way to "implement" isPrimitiveType(). Maximum log level exceeded in Developer Console Recently I have regularly been getting the error message below when opening the Developer Console:     The Developer Console didn't set the DEVELOPER_LOG trace flag on your   user. Having an active trace flag triggers debug logging. You have 316   MB of the maximum 250 MB of debug logs. Before you can edit trace   flags, delete some debug logs.   It happens in sandbox and scratch orgs. Haven't tried in production.  This only started happening recently. It goes away after clearing the logs but comes back after a few test runs.  Also: the Debug->Clear->Log Panel action is not working for me -- the logs stay put. I can remove them using the Query Editor as described , but it's pretty tedious.  Two questions:   Does anyone know a way to prevent the logs from exceeding the max level? Perhaps by having old logs cleared out automatically? Is there a known issue with the Clear Log Panel action? I am using Chrome btw.   Thanks! Linux network troubleshooting and debugging From time to time Linux and Unix users faced with various network problems. Many of these problems are presented here and at some others troubleshooting forums, but they are very concrete and contains a lot of additional technical information, and sometimes it's rather difficult to understand the main point and the real reason of buggy system behavior.   By asking this question, my intention is to start a community wiki page which allows generalizing our network troubleshooting and debugging experience. I hope the Linux and Unix users could easier recognize and solve("divide and conquer") their network problems using this page.   The parent of this page should be  . But here we should focus on troubleshooting the network problems from user- and kernel-space.  I suppose, if you:    Share the information about using some great network diagnostic tool with concrete usage examples and examples of network bugs, which they help to catch. Share the link to the great network tutorial connected with this subject Tell about a general method or recipe which allows to tackle some class of network problems Share information about your tool-set for network debugging and troubleshooting   it would perfectly fits for this topic.    I'll begin from sharing the link to varios  and . Also  seem to have actual information about our subject. And for diving into linux networking we definetely need to visit . "media change: please insert the disc labeled" when trying to install Ruby on Rails Two different solutions to integral Limit memory usage for a single Linux process I'm running pdftoppm to convert a user-provided PDF into a 300DPI image.  This works great, except if the user provides an PDF with a very large page size.  pdftoppm will allocate enough memory to hold a 300DPI image of that size in memory, which for a 100 inch square page is 100*300 * 100*300 * 4 bytes per pixel = 3.5GB.  A malicious user could just give me a silly-large PDF and cause all kinds of problems.  So what I'd like to do is put some kind of hard limit on memory usage for a child process I'm about to run--just have the process die if it tries to allocate more than, say, 500MB of memory.  Is that possible?  I don't think ulimit can be used for this, but is there a one-process equivalent? found a 1994 uncashed profit sharing retirement plan check Submitting a form by pressing enter without a submit button I use time manager for a polygon layers with dates and it works. I would like to see the cummulative addition of my polygons. So I have 4 periods I want the poylgons from 1900-1950 to be added to the new ones in 1950-2000 etc in the next time step. How can I perform that or does another open source tool exist for that? I'm trying to compile a document that only works with an up-to-date distribution, so I'd like to know: how do I update my distribution? Please provide screenshots where appropriate.  List of answers           To keep an eye on what’s going on at CTAN you may subscribe to the  or the RSS feed feed://www.mail-archive.com/ctan-ann@dante.de/maillist.xml To briefly put forward my question, can anyone beautifully explain me in your own view, what was the main intuition behind inventing the ideal of a ring? I want a clarified explanations in these points:   Why is the name "ideal" coined?. In English 'ideal' means "One that is regarded as a standard or model of perfection or excellence." Why did people gave the name of ideal to such group? And why are the ideals not present in the case of groups? And give me a very fantastic intuition and motivation behind the ideals and what are the roles served by them in advanced mathematics.   Thanks a lot, to every one. When $f(x+1)-f(x)=f'(x)$, what are the solutions for $f(x)$? The question is:     When $f(x+1)-f(x)=f'(x)$, what are the solutions for $f(x)$?   The most obvious solution is a linear function of the form $f(x)=ax+b$. Is this the only solution?  Edit  I should add that $f:\mathbb R\to\mathbb R$ to the question. $\sum_{n=1}^\infty \log \frac{n+1}{n}$  $\sum_{n=1}^\infty \log \frac{n+1}{n}$ =  $\displaystyle\lim_{n \to{+}\infty}(\log2 - \log1)+(\log3-\log2)+...+(\log(n+1)-\log n)$=$\displaystyle\lim_{n \to{+}\infty}\log(n+1)\to \infty$. So, the series diverges.  Is my procedure correct? I am notified about old comments instead of new ones I have three notifications pending but when I open the tab they were a month ago. When I refresh the page I see the correct three notifications. Pictures:  Here you see notifications from March but it is April:    Here I refreshed the page and recognized that there are indeed three unread notifications.    This behavior occurred already three times before, always with the spinlock question as first comment. Today I finally realized that there were indeed notifications pending.  Is this a bug to report? If this is not the right side to ask about this - where should I go to?  Edit 1  Browser: Firefox 28.0 (current version) Windows 7 on a Laptop  It only appears on the favourites side. When I open  I see the current comments.  Edit 2  On favourites I see the old issue    On meta and stackoverflow I see the new comment   Edit3  Still an issue on April 11th and April 16th. The question is more like: Can somebody remove this or show me a way to remove it or let it remove?  Edit4  April 20th at 14:00GMT the favourite tags turned into an error page: How can I charge my iPhone without waking up my MacBook Pro? Proving that cardinality of the reals = cardinality of $[0,1]$ LaTeX conditional expression I would like to be able to set a flag at the beginning of the main flag (say output) that tells if I want to produce a paper document or an electronic document.   Then I should check this flag to define or not empty pages, hypperref, oneside or twosides, etc.  How could I do that ? The closest I can get to making mesh lights affect their environment in Blender Eevee is giving them an Emission material and turning on "Bloom". But this isn't emitting proper light, it just looks like it is, but it doesn't light the surroundings whatsoever.     I would like to be able to light a scene with meshes without having to put point lamps everywhere just to make them emit light. Are there any rules on the positioning adverbs should take in a sentence? What's the difference between using > and >> in shell?