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sqlalchemy IS NOT NULL select
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The other answer is the preferred answer now; it also avoids many IDEs including PyCharm from generating warnings.
– Antti Haapala
Oct 6 '16 at 7:21
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Adding Only Untracked Files
...l files to the index, but without their content. Files that were untracked now behave as if they were tracked. Their content will be displayed in git diff, and you can add then interactively with git add -p.
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NHibernate.MappingException: No persister for: XYZ
Now, before you say it: I did Google and my hbm.xml file is an Embedded Resource.
16 Answers
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When should null values of Boolean be used?
...n column in a database, for example). The null value might mean "we don't know if it's true or false" in this context.
each time a method needs an Object as argument, and you need to pass a boolean value. For example, when using reflection or methods like MessageFormat.format().
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Git, see a list of comments of my last N commits
...Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit"
Now, I can just use:
glog -n 5
And I get a nice output such as:
Which is colourised, shows the name of the author and also shows the graph and you can still pass in other flags (such as --author) which lets you filter i...
How to perform file system scanning
I know how to do 2 (I am going to use jstree to display it in the browser).
7 Answers
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Passing references to pointers in C++
...ome, and discovered thing are a bit subtler than I thought. Here's what I now think is an accurate answer.
&s is not an lvalue so you cannot create a reference to it unless the type of the reference is reference to const. So for example, you cannot do
string * &r = &s;
but you can ...
How to convert a SVG to a PNG with ImageMagick?
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svgexport quality is really that high. Now it has become my favourite tool, thanks shakiba! :)
– Alessio Periloso
May 25 '15 at 22:42
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How to export table as CSV with headings on Postgresql?
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For v9.5, the command is now COPY products_273 TO '/tmp/products_199.csv' WITH (FORMAT CSV, HEADER);
– Shubham Goyal
Apr 20 '16 at 10:02
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How to Empty Caches and Clean All Targets Xcode 4 and later
...t-K should do it. Alternatively, go to product menu, press the option key, now the option "Clean" will change to "Clean Build Folder ..." select that option.
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