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Logging levels - Logback - rule-of-thumb to assign log levels
...y, logging some state during every iteration of a large loop, etc.
As or more important than choosing the right log levels is ensuring that the logs are meaningful and have the needed context. For example, you'll almost always want to include the thread ID in the logs so you can follow a single t...
From inside of a Docker container, how do I connect to the localhost of the machine?
... I am running Docker for Mac, and there is no 172.17.42.1 anymore, no docker0 anymore. It was 172.17.0.1 as gateway, and can't even telnet 172.17.0.1 3306
– zx1986
Jun 30 '16 at 3:35
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How do I explicitly instantiate a template function?
...l question due to code formatting issues. See AnthonyHatchkins' answer for more details.
If you really want to instantiate (instead of specialize or something) the function, do this:
template <typename T> void func(T param) {} // definition
template void func<int>(int param); // expli...
If threads share the same PID, how can they be identified?
...each thread has it's own ID, called a PID (although it would possibly make more sense to call this a TID, or thread ID) and they also have a TGID (thread group ID) which is the PID of the thread that started the whole process.
Simplistically, when a new process is created, it appears as a thread wh...
Jasmine.js comparing arrays
...1, 2, 3]);
});
But if the array that is returned from some function has more than 1 elements and all are zero then verify by using
expect(mockArray[0]).toBe(0);
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Where is the syntax for TypeScript comments documented?
...uch as TypeScript. TSDoc addresses these limitations while also tackling a more sophisticated set of goals.
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Execute JavaScript code stored as a string
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How to convert a JSON string to a Map with Jackson JSON
...etting upvotes, I now use the GSON library from Google, which I find to be more intuitive.
I've got the following code:
public void testJackson() throws IOException {
ObjectMapper mapper = new ObjectMapper();
File from = new File("albumnList.txt");
TypeReference<HashMap<String,...
node.js remove file
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I think you want to use fs.unlink.
More info on fs can be found here.
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Constructing pandas DataFrame from values in variables gives “ValueError: If using all scalar values
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You can also use pd.DataFrame.from_records which is more convenient when you already have the dictionary in hand:
df = pd.DataFrame.from_records([{ 'A':a,'B':b }])
You can also set index, if you want, by:
df = pd.DataFrame.from_records([{ 'A':a,'B':b }], index='A')
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