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How to read a large file - line by line?
...object, Python looks up in the list of object methods a special one called __iter__, which tells it what to do. File objects define this special method to return an iterator over the lines. (Roughly.)
– Katriel
Feb 10 '15 at 12:14
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In log4j, does checking isDebugEnabled before logging improve performance?
... running at log level of INFO or ERROR
– AztecWarrior_25
Mar 10 '18 at 0:51
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Return HTTP status code 201 in flask
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You can read about it here.
return render_template('page.html'), 201
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ElasticSearch, Sphinx, Lucene, Solr, Xapian. Which fits for which usage? [closed]
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My sphinx.conf
source post_source
{
type = mysql
sql_host = localhost
sql_user = ***
sql_pass = ***
sql_db = ***
sql_port = 3306
sql_query_pre = SET NAMES utf8
# query before fetching rows to index
sql_query =...
Send message to specific client with socket.io and node.js
...ous> (C:\Users\Dev\Desktop\nouty-server\server.js:108:14) at Module._compile (module.js:460:26) at Object.Module._extensions..js (module.js:478:10) at Module.load (module.js:355:32) at Function.Module._load (module.js:310:12) at Function.Module.runMain (module.js:501:10) a...
Rolling or sliding window iterator?
...f window(seq, n=2):
it = iter(seq)
win = deque((next(it, None) for _ in xrange(n)), maxlen=n)
yield win
append = win.append
for e in it:
append(e)
yield win
In my tests it handily beats everything else posted here most of the time, though pillmuncher's tee versi...
What are unit tests, integration tests, smoke tests, and regression tests?
... located under myprj, I have the unit tests located under myprj/tests/test_module1.py, and my package located under myprj/mypkg. This works great for unit tests, but I wonder if there is any convention, I should follow for where the integration tests should reside?
– alpha_9...
Database sharding vs partitioning
...ty reasons, as for load balancing.
https://en.wikipedia.org/wiki/Partition_(database)
Sharding is a type of partitioning, such as Horizontal Partitioning (HP)
There is also Vertical Partitioning (VP) whereby you split a table into smaller distinct parts. Normalization also involves this splitting...
How to prevent ifelse() from turning Date objects into numeric objects
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You may use data.table::fifelse (data.table >= 1.12.3) or dplyr::if_else.
data.table::fifelse
Unlike ifelse, fifelse preserves the type and class of the inputs.
library(data.table)
dates <- fifelse(dates == '2011-01-01', dates - 1, dates)
str(dates)
# Date[1:5], format: "2010-12-31" "2...
How to fix the “java.security.cert.CertificateException: No subject alternative names present” error
...t browser validation for SSL protocols (Poodle vulnerability) gives me: ssl_error_no_cypher_overlap. Any ideas?
– will824
May 28 '15 at 22:34
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