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Pandas - Get first row value of a given column
...ecommended) and df_test.iloc[0]['Btime']:
DataFrames store data in column-based blocks (where each block has a single
dtype). If you select by column first, a view can be returned (which is
quicker than returning a copy) and the original dtype is preserved. In contrast,
if you select by row first, ...
Different dependencies for different build profiles
...ample, a project built for a test environment may point to a different database than that of the final deployment. Or dependencies may be pulled from different repositories based upon the JDK version used.
(Emphasis is mine)
Just put the dependency for the release profile inside the profile declar...
Is it possible to cherry-pick a commit from another git repository?
...py of the patch that failed is found in: <some_other_repo>/.git/rebase-apply/patch When you have resolved this problem, run "git am --continue". If you prefer to skip this patch, run "git am --skip" instead. To restore the original branch and stop patching, run "git am --abort".
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Message Queue vs Message Bus — what are the differences?
...plication C can be configured to listen to the message bus and take action based on these updates as well, without requiring any update to application A. Unlike queues, where the sending application explicitly adds messages to every queue, a message bus uses a publish/subscribe model. Messages are p...
How do I configure different environments in Angular.js?
...iceProvider.check() ... will automatically set the appropriate environment based on given domains". So I reckon it detects the current domain and sets the environment appropriately – time to test it out!
– StevieP
May 17 '16 at 12:06
...
In which scenario do I use a particular STL container?
...at_set" (from Boost.Container), or equivalent (every major library or code-base has a flat_set equivalent, AFAIK). But these are non-standard, and quite a glaring omission from the STL. And the reason why you don't want to iterate through std::set or std::map (at least not frequently) is that it is ...
Show MySQL host via SQL Command
...l incoming requests :-
select host from information_schema.processlist;
Based on your last comment,
I don't think you can resolve IP for the hostname using pure mysql function,
as it require a network lookup, which could be taking long time.
However, mysql document mention this :-
resolveip go...
How enumerate all classes with custom class attribute?
Question based on MSDN example .
7 Answers
7
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Should I implement __ne__ in terms of __eq__ in Python?
...
Python, should I implement __ne__() operator based on __eq__?
Short Answer: Don't implement it, but if you must, use ==, not __eq__
In Python 3, != is the negation of == by default, so you are not even required to write a __ne__, and the documentation is no longer op...
static constructors in C++? I need to initialize private static objects
...a subobject of MyClass. Subobjects are initialised in this order: virtual base class subobjects, in depth-first, left-to-right order (but only initialising each distinct subobject once); then plain base class subobjects, in depth-first, left-to-right order; then member subobjects in order of declar...