size

问题 Programming languages (e.g. c, c++, and java) usually have several types for integer arithmetic: signed and unsigned types types of different size: short , int , long , long long types of guaranteed and non guaranteed (i.e.implementation dependent) size: e.g. int32_t vs int (and I know that int32_t is not part of the language) How would you summarize when one should use each of them? 回答1: The default integral type ( int ) gets a "first among equals" preferential treatment in pretty much all

问题 I have a situation where I need to know the size of a String /encoding pair, in bytes, but cannot use the getBytes() method because 1) the String is very large and duplicating the String in a byte[] array would use a large amount of memory, but more to the point 2) getBytes() allocates a byte[] array based on the length of the String * the maximum possible bytes per character. So if I have a String with 1.5B characters and UTF-16 encoding, getBytes() will try to allocate a 3GB array and fail,

问题 Recently, I've been surprised by the fact that some Java collections don't have constant time operation of method size(). While I learned that concurrent implementations of collections made some compromises as a tradeoff for gain in concurrency (size being O(n) in ConcurrentLinkedQueue, ConcurrentSkipListSet, LinkedTransferQueue, etc.) good news is that this is properly documented in API documentation. What concerned me is the performance of method size on views returned by some collections'

问题 I am using Smarty and one of my section shows file names, including dates, file size, last access etc... I want to display the size of the file in K if less then 1024, in Mb if less than 1048576 etc... The data (file info) comes from the database (name, file size, date etc...) ex: File Mime Size Date Filename1.jpg mime/jpg 14.1Kb 2011/12/12 Is there any modifier in Smarty that do this? Thanks 回答1: create a file in the plugin directory called: modifier.filesize.php then add this code: <?php /*

问题 I understand that this response clearly states that this is not possible without a private function call. Therefore, according to Apple's terms, this approach cannot be used on an App Store app. However, some apps already seem to use this function call: Penultimate for actual palm rejection without a predefined rejection area like in Note Taker HD Virtuoso for pressure sensitivity, which they call "TrueVelocity 2" GarageBand also for pressure sensitivity Clearly, this approach is already

问题 I'm going to archive an old huge project containing a lot of garbage. I hope I'll never need it again, but I want to put all important things under version control. Because of the chaos in the project, it's not easy to say what are the sources and what can go away (there's no makefile , no make clean , nothing). So I'd like to put there nearly everything and consider only the largest files for exclusion. How can I list the files to be committed (or to be staged) together with their size? I

问题 Can anyone think of a way I can discover a users pixels per inch? I want to ensure that a image displays in a web browser exactly the size I need it to, so using a combination of resolution (which I can get from the user agent) and pixels per inch I could do this. However, I'm not sure if there is any way to discover a users pixels per inch, ideally using JavaScript or some other non-invasive method. Any suggestions? Thanks, CJ 回答1: You could use the following javascript function to get the

问题 My repository is 2.5G. A dump via svnadmin dump myrepos > dumpfile is 5G. But when I do a dump like svnadmin dump myrepos -r 23785 > rev-23785.dumpfile where 23785 is the youngest revision the dump goes beyond 15G and at that point I stop the dump. When requesting a dump for just the one revision, why is the result far larger than the entire dump? 回答1: This page explains: http://linuxtopia.org/online_books/programming_tool_guides/version_control_with_subversion/svn.reposadmin.maint_8.html "To

问题 I'm using apache, PHP. So, for php, even I set max file size, if someone upload a huge file, it will upload the whole thing to server, and then PHP return error. is that right? I would like the web server or PHP to stop when the file size or the request size is larger than certain size. is there a way to do it? I remember something like setting post_max_size or setting something in apache.conf but not sure if it will stop when the file goes over the max limit. I don't trust client side

问题 I'm trying to plot a 3D scatter with matplotlib The problem is that I can't change the marker's size I have this scat = plt.scatter([boid_.pos[0] for boid_ in flock], [boid_.pos[1] for boid_ in flock], [boid_.pos[2] for boid_ in flock], marker='o', s=5) But I get the error TypeError: scatter() got multiple values for keyword argument 's' Without that, the plot works fine. Where is the problem? Or is there another way to change the size? 回答1: This function takes in two args before the keyword