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What is the minimum valid JSON?
...e the specific exception listed above. Ruby, for example, would seem to be one such example which only accepts objects and arrays as the root. PHP, on the other hand, specifically adds the exception that "it will also encode and decode scalar types and NULL".
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When do you use Java's @Override annotation and why?
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In case anyone else got here because of the apparently undocumented change from 1.5 to 1.6 for @Overrides on methods coming from interfaces, bugs.sun.com/bugdatabase/view_bug.do?bug_id=5008260 seems to be the corresponding bug. (Thanks ...
Why is 1/1/1970 the “epoch time”?
... the epoch was rounded down to the nearest decade, thus becoming 1970-1-1. One must assume that this was considered a bit neater than 1971-1-1.
Note that a 32-bit signed integer using 1970-1-1 as its epoch can represent dates up to 2038-1-19, on which date it will wrap around to 1901-12-13.
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How do I expand the output display to see more columns of a pandas DataFrame?
...ilar names are introduced.
value - new value of option.
Returns
-------
None
Raises
------
KeyError if no such option exists
display.chop_threshold: [default: None] [currently: None]
: float or None
if set to a float value, all float values smaller then the given threshold
will b...
Wrong Manifest.mf in IntelliJ IDEA created .jar
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As noted in @grudolf's comment in one of the other answers, one way to do this (and the only one that worked for me in an imported Gradle project) is to create an empty jar as follows:
Project Structure -> Artifacts -> + Jar -> Empty
Centre pane no...
Find (and kill) process locking port 3000 on Mac
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Nothing above worked for me. Anyone else with my experience could try the following (worked for me):
Run:
lsof -i :3000 (where 3000 is your current port in use)
then check status of the reported PID :
ps ax | grep <PID>
finally, "begone with it...
When and why to 'return false' in JavaScript?
...lse is deprecated and doesn't always work anymore.
– onetwopunch
Mar 24 '14 at 21:32
1
Sometimes ...
WCF service startup error “This collection already contains an address with scheme http”
...onment I held out for a purely configuration solution. I eventually found one which details how to do it in .net 3.0 and .net 3.5.
Taken from the site, below is an example of how to alter your applications web config:
<system.serviceModel>
<serviceHostingEnvironment>
<b...
A proper wrapper for console.log with correct line number?
... and reports all console data exactly as it should. No hacks required and one line of code Check out the codepen.
var debug = console.log.bind(window.console)
Create the switch like this:
isDebug = true // toggle this to turn on / off for global controll
if (isDebug) var debug = console.log.bi...
Find duplicate lines in a file and count how many time each line was duplicated?
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Assuming there is one number per line:
sort <file> | uniq -c
You can use the more verbose --count flag too with the GNU version, e.g., on Linux:
sort <file> | uniq --count
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