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Unix command-line JSON parser? [closed]
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How do I validate a date string format in python?
...ncorrect data format, should be YYYY-MM-DD")
>>> validate('2003-12-23')
>>> validate('2003-12-32')
Traceback (most recent call last):
File "<pyshell#20>", line 1, in <module>
validate('2003-12-32')
File "<pyshell#18>", line 5, in validate
raise Valu...
Make outer div be automatically the same height as its floating content
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169
You can set the outerdiv's CSS to this
#outerdiv {
overflow: hidden; /* make sure this do...
phantomjs not waiting for “full” page load
I'm using PhantomJS v1.4.1 to load some web pages. I don't have access to their server-side, I just getting links pointing to them. I'm using obsolete version of Phantom because I need to support Adobe Flash on that web pages.
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How do shift operators work in Java? [duplicate]
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214
System.out.println(Integer.toBinaryString(2 << 11));
Shifts binary 2(10) by 11 times t...
Understanding the Event Loop
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1: If we are talking about a single-threaded application, then what processes setTimeouts while JS engine accepts more requests and executes them? Isn't that single thread will continue working on other requests? Then who is ...
Find rows that have the same value on a column in MySQL
...SELECT email,
count(*) AS c
FROM TABLE
GROUP BY email
HAVING c > 1
ORDER BY c DESC
If you want the full rows:
select * from table where email in (
select email from table
group by email having count(*) > 1
)
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Counting null and non-null values in a single query
... to get it to work on another RDBMS):
select sum(case when a is null then 1 else 0 end) count_nulls
, count(a) count_not_nulls
from us;
Or:
select count(*) - count(a), count(a) from us;
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How to define a function in ghci across multiple lines?
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125
For guards (like your example), you can just put them all on one line and it works (guards do ...