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Should I use 'has_key()' or 'in' on Python dicts?
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in wins hands-down, not just in elegance (and not being deprecated;-) but also in performance, e.g.:
$ python -mtimeit -s'd=dict.fromkeys(range(99))' '12 in d'
10000000 loops, best of 3: 0.0983 usec per loop
$ python -mtimeit -...
Akka or Reactor [closed]
...nicate between components and it works seamlessly.
– Wins
Jan 2 '17 at 19:57
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Failed to load c++ bson extension
... node noob here. I've been trying to set up a sample node app but the following error keeps popping up every time I try to run:
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PDOException “could not find driver”
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You need to have a module called pdo_mysql. Looking for following in phpinfo(),
pdo_mysql
PDO Driver for MySQL, client library version => 5.1.44
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Resharper Alt Enter not working
...: the menu pops up for a split second, then goes away. Fix using the following steps in numerical order.
Symptom B: pressing Alt+Enter ↵ does nothing. Fix using Step #2 first then try Step #1 if the issue persists.
Perform a Visual Studio reset:
Run cmd.exe as Administrator
cd C:\Program Fi...
Why do some claim that Java's implementation of generics is bad?
...ut the downsides of that are huge, and permanent. There's a big short term win, and a long term loss IMO.
– Jon Skeet
Feb 7 '09 at 16:32
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What is the best way to unit test Objective-C code?
...ford:
"The goals of GHUnit are:
Runs unit tests within XCode, allowing
you to fully utilize the XCode
Debugger. A simple GUI to help you
visualize your tests. Show stack
traces. Be installable as a framework
(for Cocoa apps) with a simple (or
not) target setup; or easy to packag...
Are braces necessary in one-line statements in JavaScript?
...ematic code. The vertical space argument is just silly. Readability always wins, and today's screens are huge.
– Kim
Nov 23 '17 at 1:11
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File system that uses tags rather than folders?
...imental implementation for Linux called DBFS. Microsoft started developing Windows Future Storage (WinFS) - it was planned to ship with Vista but due to technical problems the project was delayed and as far as I know finally canceled. NTFS is also capable of storing metadata for files but not to an ...
How to UPSERT (MERGE, INSERT … ON DUPLICATE UPDATE) in PostgreSQL?
... preferred whenever practical.
In this case, you typically follow the following process:
CREATE a TEMPORARY table
COPY or bulk-insert the new data into the temp table
LOCK the target table IN EXCLUSIVE MODE. This permits other transactions to SELECT, but not make any changes to the table.
Do an ...