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How do I change the working directory in Python?
...just add return self at the end of __enter__. That way you can do with cd('foo') as cm: and access the previous dir as cm.savedPath
– Sam F
Mar 27 '18 at 7:35
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List submodules in a Git repository
...s work. fatal: no submodule mapping found in .gitmodules for path 'bla-bla/foo-bar'. First you have to delete all inner repositories that are not submoduled yet.
– it3xl
May 1 '19 at 9:17
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How to check if an option is selected?
...mple thing. .is() should be used for complicated selector like $(...).is('.foo > [name="aaa"] input') or for properties that are not native DOM elements properties like $(...).is(":visiable").
– gdoron is supporting Monica
Apr 18 '12 at 16:56
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How do you rename a table in SQLite 3.0?
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ALTER TABLE `foo` RENAME TO `bar`
SQLite Query Language: ALTER TABLE
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How to parse the AndroidManifest.xml file inside an .apk package
This file appears to be in a binary XML format. What is this format and how can it be parsed programmatically (as opposed to using the aapt dump tool in the SDK)?
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Method call if not null in C#
..., nothing happens. When the method has arguments, e.g. obj?.SomeMethod(new Foo(), GetBar()); the arguments are not evaluated if obj is null, which matters if evaluating the arguments would have side effects.
And chaining is possible: myObject?.Items?[0]?.DoSomething()
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How to write a test which expects an Error to be thrown in Jasmine?
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It's expect(foo).toThrowError(TypeError); in Jasmine 2.5: jasmine.github.io/2.5/introduction
– Benny Neugebauer
Feb 17 '17 at 16:24
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Spring JPA selecting specific columns
... a custom JPQL query in the JPA repository class):
@Query("select new com.foo.bar.entity.Document(d.docId, d.filename) from Document d where d.filterCol = ?1")
List<Document> findDocumentsForListing(String filterValue);
Then of course, you just have to provide a constructor for Document tha...
Java - How to create new Entry (key, value)
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Here is a simple example:
Entry<String, String> entry = Map.entry("foo", "bar");
As it is immutable, calling setValue will throw an UnsupportedOperationException. The other limitations are the fact that it is not serializable and null as key or value is forbidden, if it is not acceptable f...
Split a module across several files
I want to have a module with multiple structs in it, each in its own file. Using a Math module as an example:
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