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How to use WPF Background Worker

... private void worker_DoWork(object sender, DoWorkEventArgs e) { // run all background tasks here } private void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { //update ui once worker complete his work } Run worker async...
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How to avoid reinstalling packages when building Docker image for Python projects?

...ase WORKDIR /srv ADD ./requirements.txt /srv/requirements.txt RUN pip install -r requirements.txt ADD . /srv RUN python setup.py install ENTRYPOINT ["run_server"] Docker will use cache during pip install as long as you do not make any changes to the requirements.txt, irrespective of the fact whet...
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For files in directory, only echo filename (no path)

...s Parameter Expansion which is native to the shell and does not require a call to an external binary such as basename However, might I suggest just using find find /home/user -type f -printf "%f\n" share | ...
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C++ unordered_map using a custom class type as the key

...rrides operator(), or as a specialization of std::equal, or – easiest of all – by overloading operator==() for your key type (as you did already). The difficulty with the hash function is that if your key type consists of several members, you will usually have the hash function calculate hash ...
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create a trusted self-signed SSL cert for localhost (for use with Express/Node)

...dejs/Express. None of them work properly because while the cert gets installed, it is not trusted. here's what I've tried that fails: ...
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MySQL vs MySQLi when using PHP [closed]

...It should also be noted that MySQLi only works with MySQL 5+. This isn't really relevant anymore, but when MySQLi came out, MySQL 4 was still the standard. This is part of the reason the extensions are separate, the old MySQL driver staying there for compatibility purposes. – z...
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How can I upload files asynchronously?

... It's FormData who does all the magic here. Be sure to check these docs — it covers all your question about multiple files and fields. – BorisOkunskiy Sep 12 '13 at 13:26 ...
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Comparing Dates in Oracle SQL

...; to_date('31-DEC-95','DD-MON-YY') This method has a few unnecessary pitfalls As a_horse_with_no_name noted in the comments, DEC, doesn't necessarily mean December. It depends on your NLS_DATE_LANGUAGE and NLS_DATE_FORMAT settings. To ensure that your comparison with work in any locale you can u...
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MongoDB: How to update multiple documents with a single command?

...: 'field1', field2: 'field2'}) New in version 3.2 Params:: {}: select all records updated Keyword argument multi not taken share | improve this answer | follow ...
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How to get the root dir of the Symfony2 application?

...If you follow best practices, injecting the container should be avoided at all costs. As for the solution of getting web directory, I still use the one I provided above ;) – Jovan Perovic Apr 18 '16 at 10:19 ...