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Is Zookeeper a must for Kafka?
...roducer and multiple consumers (each consumer getting its own copy of data from the broker). Given this, I do not want the overhead of using Zookeeper; Can I not just use the broker only? Why is a Zookeeper must?
...
Pandas: drop a level from a multi-level column index?
...
You can use MultiIndex.droplevel:
>>> cols = pd.MultiIndex.from_tuples([("a", "b"), ("a", "c")])
>>> df = pd.DataFrame([[1,2], [3,4]], columns=cols)
>>> df
a
b c
0 1 2
1 3 4
[2 rows x 2 columns]
>>> df.columns = df.columns.droplevel()
>>...
What does the “static” modifier after “import” mean?
...mport
declaration. Where the normal import
declaration imports classes from
packages, allowing them to be used
without package qualification, the
static import declaration imports
static members from classes, allowing
them to be used without class
qualification.
So when should y...
Prevent jQuery UI dialog from setting focus to first textbox
...olute positioning. I know you have that class because you are using dialog from jquery-ui and it's in jquery-ui.
<span class="ui-helper-hidden-accessible"><input type="text"/></span>
share
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How can I get the domain name of my site within a Django template?
How do I get the domain name of my current site from within a Django template? I've tried looking in the tag and filters but nothing there.
...
Decode HTML entities in Python string?
... be removed in 3.5, although it was left in by mistake. It will be removed from the language soon.
Python 2.6-3.3
You can use HTMLParser.unescape() from the standard library:
For Python 2.6-2.7 it's in HTMLParser
For Python 3 it's in html.parser
>>> try:
... # Python 2.6-2.7
.....
What are Makefile.am and Makefile.in?
...efile.in to generate a Makefile.
The configure script itself is generated from a programmer-defined file named either configure.ac or configure.in (deprecated). I prefer .ac (for autoconf) since it differentiates it from the generated Makefile.in files and that way I can have rules such as make dis...
JavaScript variable assignments from tuples
...f, as JavaScript doesn't seem to provide obvious tuple support, and coming from an intense period of functional programming, you develop the want for tuples. I also just found this, but not sure if it works, it just looked good in terms of tuple support too: cs.umd.edu/projects/PL/arrowlets/api-tu...
How to get Locale from its String representation in Java?
Is there a neat way of getting a Locale instance from its "programmatic name" as returned by Locale's toString() method? An obvious and ugly solution would be parsing the String and then constructing a new Locale instance according to that, but maybe there's a better way / ready solution for tha...
What should main() return in C and C++?
...tes how the program exited. Normal exit is represented by a 0 return value from main. Abnormal exit is signaled by a non-zero return, but there is no standard for how non-zero codes are interpreted. As noted by others, void main() is prohibited by the C++ standard and should not be used. The valid C...