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TypeError: ObjectId('') is not JSON serializable
My response back from MongoDB after querying an aggregated function on document using Python, It returns valid response and i can print it but can not return it.
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How to remove a field from params[:something]
...l so use with more care!
Original Answer
You can remove a key/value pair from a Hash using Hash#delete:
params.delete :company
If it's contained in params[:user], then you'd use this:
params[:user].delete :company
sha...
Java exception not caught?
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From the Java Language Specification 14.20.2.:
If the catch block completes abruptly for reason R, then the finally block is executed. Then there is a choice:
If the finally block completes normally, then the try statement ...
Java 8 stream reverse order
...reverse IntStream, try something like this:
static IntStream revRange(int from, int to) {
return IntStream.range(from, to)
.map(i -> to - i + from - 1);
}
This avoids boxing and sorting.
For the general question of how to reverse a stream of any type, I don't know of t...
How to change a module variable from another module?
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You are using from bar import a. a becomes a symbol in the global scope of the importing module (or whatever scope the import statement occurs in).
When you assign a new value to a, you are just changing which value a points too, not the...
How to prevent a background process from being stopped after closing SSH client in Linux
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I would recommend using GNU Screen. It allows you to disconnect from the server while all of your processes continue to run. I don't know how I lived without it before I knew it existed.
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Convert a binary NodeJS Buffer to JavaScript ArrayBuffer
... write to an ArrayBuffer, you only need to create a view and copy across.
From Buffer to ArrayBuffer:
function toArrayBuffer(buf) {
var ab = new ArrayBuffer(buf.length);
var view = new Uint8Array(ab);
for (var i = 0; i < buf.length; ++i) {
view[i] = buf[i];
}
return ...
How do I put an already-running process under nohup?
...your shell) This allows you to see all the jobs that this shell started." (from [quantprinciple.com/invest/index.php/docs/tipsandtricks/unix/…)
– Dr. Jan-Philip Gehrcke
Mar 17 '11 at 13:46
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Removing an activity from the history stack
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How can I achieve this from code? Because I don't want to do this all the time. I would like to remove a given activity from history only under some conditions.
– Namratha
Jan 31 '13 at 10:07
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super() raises “TypeError: must be type, not classobj” for new-style class
...e distinct. Here, OldStyle().__class__ is OldStyle, which does not inherit from object, while type(OldStyle()) is the instance type, which does inherit from object. Basically, an old-style class just creates objects of type instance (whereas a new-style class creates objects whose type is the class...