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Android Writing Logs to text File
...ut then this method creates file but contains nothing. Basically I want to read previous contents of the file and then append my data with the existing content.
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How to copy from CSV file to PostgreSQL table with headers in CSV file?
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@Daniel I understood the user's table already existed and had all the columns they needed and that they wanted to simply ADD data.
– G. Cito
Jul 28 '14 at 16:16
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Find full path of the Python interpreter?
...HOSTNAME ~
$ type python
python is hashed (/usr/bin/python)
If you are already in the python shell. Try anyone of these.
Note: This is an alternate way. Not the best pythonic way.
>>>
>>> import os
>>> os.popen('which python').read()
'/usr/bin/python\n'
>>>
>...
How to modify a global variable within a function in bash?
...4 20171129-132414 20171129-132414 20171129-132414 20171129-132414
This already looks very good. (But there still is the local -n which does not work in oder common bash 3.x)
Avoid changing d()
The last solution has some big flaws:
d() needs to be altered
It needs to use some internal details ...
Dealing with commas in a CSV file
...aid, you need to escape values that include quotes. Here’s a little CSV reader in C♯ that supports quoted values, including embedded quotes and carriage returns.
By the way, this is unit-tested code. I’m posting it now because this question seems to come up a lot and others may not want an ...
Removing trailing newline character from fgets() input
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Any C runtime library that is thread aware (which is to say, most any that target a multi-threaded platform), strtok() will be thread safe (it will use thread local storage for the 'inter-call' state). That said, it's still generally better to use the non-s...
In what order do static/instance initializer blocks in Java run?
...n a class, such blocks are run in the order they appear in the code. I've read that it's the same across classes, but some sample code I wrote disagrees with that. I used this code:
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Why are Subjects not recommended in .NET Reactive Extensions?
..., how do we publish it?
I would imagine that you would want a dedicated thread for polling. You wouldn't want some other coder hammering the ThreadPool/TaskPool and leaving you in a ThreadPool starvation situation. Alternatively you don't want the hassle of context switching (I guess). So assume we...
How can I convert an RGB image into grayscale in Python?
I'm trying to use matplotlib to read in an RGB image and convert it to grayscale.
12 Answers
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Is GridFS fast and reliable enough for production?
... present in the grid... or... deliver it to the visitors browser if it's already stored in the grid. So, this could be called as a 'traditional cdn schema'.
We have stored and processed 4 million images on this server since it's up and running. The resize and store stuff is done by a simple php scr...