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Parse large JSON file in Nodejs
... until you hit a newline. Assuming we have one JSON object per line (basically, format B):
var stream = fs.createReadStream(filePath, {flags: 'r', encoding: 'utf-8'});
var buf = '';
stream.on('data', function(d) {
buf += d.toString(); // when data is read, stash it in a string buffer
pump...
ipython: print complete history (not just current session)
...the session you are interested in.(http://ipython.readthedocs.io/en/stable/api/generated/IPython.core.history.html?highlight=hist#IPython.core.history.HistoryAccessor.get_session_info)
profile_hist=IPython.core.history.HistoryAccessor(profile='default')
profile_hist.get_session_info(100)
This wil...
How to check for a valid Base64 encoded string
...
calling base64String.Contains multiple times may result in poor performance incase of base64String being a large string.
– NucS
Jul 23 '15 at 11:46
...
Why C# implements methods as non-virtual by default?
...on in the class can be plugged out and replaced by another, which is not really a good thing. Many people even believe that classes should have been sealed by default.
virtual methods can also have a slight performance implication. This is not likely to be the primary reason, however.
...
Is there a way to simulate the C++ 'friend' concept in Java?
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Here is a small trick that I use in JAVA to replicate C++ friend mechanism.
Lets say I have a class Romeo and another class Juliet. They are in different packages (family) for hatred reasons.
Romeo wants to cuddle Juliet and Juliet wan...
Understanding NSRunLoop
... run loop directly, though there are some (networking) components that may allow you to specify which run loop they will use for I/O processing.
A run loop for a given thread will wait until one or more of its input sources has some data or event, then fire the appropriate input handler(s) to proce...
What HTTP status response code should I use if the request is missing a required parameter?
...ay occur if an XML
request body contains well-formed (i.e., syntactically correct), but
semantically erroneous, XML instructions.
They state that malformed xml is an example of bad syntax (calling for a 400). A malformed query string seems analogous to this, so 400 doesn't seem appropr...
Get the current user, within an ApiController action, without passing the userID as a parameter
...s have shown that using static properties to access request context causes all kinds of architectural problems. It's convenient at first but it causes soooooo much pain long term.
– Darrel Miller
Aug 28 '18 at 13:44
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When exactly are onSaveInstanceState() and onRestoreInstanceState() called?
...id onRestoreInstanceState (Bundle savedInstanceState)
This method is called between onStart() and onPostCreate(Bundle).
void onSaveInstanceState (Bundle outState)
If called, this method will occur after onStop() for applications targeting platforms starting with Build.VERSION_CODES.P....
How to get JSON from webpage into Python script
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Get data from the URL and then call json.loads e.g.
Python3 example:
import urllib.request, json
with urllib.request.urlopen("http://maps.googleapis.com/maps/api/geocode/json?address=google") as url:
data = json.loads(url.read().decode())
print(d...