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How to escape text for regular expression in Java
... may lead to unexpected results, for example Pattern.quote("*.wav").replaceAll("*",".*") will result in \Q.*.wav\E and not .*\.wav, as you might expect.
– Matthias Ronge
Jan 16 '13 at 13:27
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How to perform OR condition in django queryset?
I want to write a Django query equivalent to this SQL query:
4 Answers
4
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Fetch frame count with ffmpeg
...default=nokey=1:noprint_wrappers=1 input.mp4
This is a fast method.
Not all formats (such as Matroska) will report the number of frames resulting in the output of N/A. See the other methods listed below.
ffprobe: Count the number of frames
ffprobe -v error -count_frames -select_streams v:0 -sh...
Can Maven be made less verbose?
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In maven 3.5.x I actually need to enable --batch-mode (-B) for the -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn trick to work.
– Auke
Oct 20 '17 at 12:44
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How do I install cygwin components from the command line?
... the Cygwin package similar to apt-get on Debian or yum on redhat that allows me to install components from the command line?
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AngularJS - wait for multiple resource queries to complete
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You'll want to use promises and $q.all().
Basically, you can use it to wrap all of your $resource or $http calls because they return promises.
function doQuery(type) {
var d = $q.defer();
var result = Account.query({ type: type }, function() {
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“You have mail” message in terminal, os X [closed]
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and then type "d *" to erase all messages
– Ricardo Martins
Mar 20 '17 at 12:23
9
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ImageView 扩展：图片查看器扩展，支持缩放、双击缩放和动画缩放 · App In...
... 图片加载
常见问题
Q: 如何设置初始缩放比例？
Q: 支持哪些图片格式？
Q: 如何处理图片加载失败？
Q: 缩放操作会影响性能吗？
Q: 可以同时使用多个 ImageView 实...
Difference between Django's annotate and aggregate methods?
...rage_price': 34.35}
Returns a dictionary containing the average price of all books in the queryset.
Annotation
>>> q = Book.objects.annotate(num_authors=Count('authors'))
>>> q[0].num_authors
2
>>> q[1].num_authors
1
q is the queryset of books, but each book has been...
Default filter in Django admin
How can I change the default filter choice from 'ALL'? I have a field named as status which has three values: activate , pending and rejected . When I use list_filter in Django admin, the filter is by default set to 'All' but I want to set it to pending by default.
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