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std::shared_ptr of this
... purpose. You inherit from it and you can call .shared_from_this() from inside the class. Also, you are creating circular dependencies here that can lead to resource leaks. That can be resolved with the use of std::weak_ptr. So your code might look like this (assuming children rely on existence of p...
How to create a temporary directory and get the path / file name in Python
... shutil.rmtree(temp_dir.name) is not necessary.
– sidcha
Nov 14 '19 at 7:14
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How to find the installed pandas version
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In [77]: pd.__version__
Out[77]: '0.12.0-933-g281dc4e'
Pandas also provides a utility function, pd.show_versions(), which reports the version of its dependencies as well:
In [53]: pd.show_versions(as_json=False)
INSTALLED VERSIONS
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commit: None
python: 2.7.6.final.0
python-bi...
Closing JDBC Connections in Pool
... the actual connection back to the pool. It's further up to the pool to decide whether the actual connection will actually be closed or be reused for a new getConnection() call. So, regardless of whether you're using a connection pool or not, you should always close all the JDBC resources in reverse...
Async/Await vs Threads
...ion, what's at the right of the await keyword, is what gets the job done. Ideally it doesn't use a thread at all, it posts a driver request and once the driver completes the data transfer it generates a completion notification callback. Networking is by far the most common usage, latencies of hund...
onIabPurchaseFinished never called.
...ng to set up in-app billing for my first app, and have been using the android.test.purchased sku. The purchase come through, and I manage to get the SKU into my inventory, but, as the title says, onIabPurchaseFinished, is never called.
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java: Class.isInstance vs Class.isAssignableFrom
...hen clazz is a Foo, then clazz.isAssignableFrom(Foo.class) is true. Where did I say otherwise?
– uckelman
Apr 2 '13 at 9:09
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Open a buffer as a vertical split in VIM
...for either of these cases, which I find easier to remember than @Jeet's valid answer: :vsp | b N and :tabe | b N.
– ches
Sep 12 '11 at 12:16
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How do I move a file with Ruby?
... File rename won't work across partitions, and throws the error "Invalid cross-device link". FileUtils is a better choice in those cases, but for a simple move in the same partition, rename works.
– d3vkit
Jan 25 '13 at 4:06
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what is the preferred way to mutate a React state?
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As much as I appreciate the idea behind immutability helpers (and I may end up using it anyway), Array.concat sure beats adding another library.
– Shawn Erquhart
Jan 2 '16 at 18:25
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