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Why is a combiner needed for reduce method that converts type in java 8
...the accumulator.
The two argument reduce is defined as :
T reduce(T identity,
BinaryOperator<T> accumulator)
In your case, T is String, so BinaryOperator<T> should accept two String arguments and return a String. But you pass to it an int and a String, which results in the c...
Manually map column names with class properties
I am new to the Dapper micro ORM. So far I am able to use it for simple ORM related stuff but I am not able to map the database column names with the class properties.
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How many and which are the uses of “const” in C++?
...s that look still very obscure to me, one of these is const . You can use it in so many places and with so many different effects that is nearly impossible for a beginner to come out alive. Will some C++ guru explain once forever the various uses and whether and/or why not to use them?
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Code Golf: Lasers
...board where $t{99*i+j} holds the character at row i,column j. Then,
%d=split//,'>.^1<2v3' ; ($r)=grep{$d|=$d{$t{$_}}}%t
it searches the elements of %t for a character that matches > ^ < or v, and simultaneously sets $d to a value between 0 and 3 that indicates the initial direction of...
What does collation mean?
What does collation mean in SQL, and what does it do?
9 Answers
9
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MySQL > Table doesn't exist. But it does (or it should)
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cp -r /path/to/my/database /var/lib/mysql/new_database
If you do this with a database that uses InnoDB tables, you will get this crazy 'table does not exist' error mentioned above.
The issue is that you need the ib* files in the root of the MySQL datadir (e.g. ibdata1, ib_logfile0 and ib_logfil...
how to convert array values from string to int?
...follow
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edited Apr 23 '19 at 10:46
Rahul
16.8k77 gold badges3434 silver badges5353 bronze badges
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How can I open the interactive matplotlib window in IPython notebook?
I am using IPython with --pylab=inline and would sometimes like to quickly switch to the interactive, zoomable matplotlib GUI for viewing plots (the one that pops up when you plot something in a terminal Python console). How could I do that? Preferably without leaving or restarting my notebook.
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Visual Studio “Find” results in “No files were found to look in. Find stopped progress.”
...d interest
in this bug. We have been able to
reproduce the issue intermittently in
several versions of Visual Studio
running on several versions of Windows
and have identified the root cause as
external to VS. The Windows team
unfortunately did not have time to fix
this for their cur...
How to activate JMX on my JVM for access with jconsole?
How to activate JMX on a JVM for access with jconsole?
11 Answers
11
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