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MongoDB: update every document on one field
...n, for your example, the <update> is:
{ $set: { lastLookedAt: Date.now() / 1000 } }
However, depending on your version of MongoDB, the query will look different. Regardless of version, the key is that the empty condition {} will match any document. In the Mongo shell, or with any MongoDB ...
StringBuilder vs String concatenation in toString() in Java
...ion, it will be because it is not worth it. In 99% of cases, the compiler knows better which optimization is worth it, so as a rule of thumb the dev should not interfere. Of course, your situation may fall into the other 1%, but that can only be checked by (careful) benchmarking.
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Java Reflection: How to get the name of a variable?
...s added to Java 8. Parameter (a special class of local variable) names are now available via reflection. Among other purposes, this can help to replace @ParameterName annotations used by dependency injection containers.
shar...
Why is “copy and paste” of code dangerous? [closed]
...nge you ever need to make in the code (not just bugfixes, any change) will now be twice as expensive to do because you have to update two places - and more risky because you WILL forget one of them eventually. In other words, making it work faster now will make your work even slower in the future, w...
Convert Year/Month/Day to Day of Year in Python
...ery simple solution:
from datetime import datetime
day_of_year = datetime.now().timetuple().tm_yday
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How can I calculate the time between 2 Dates in typescript
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A tip, instead of using new Date().getTime() use Date.now() so you don't make new objects unnecessarily.
– PhoneixS
Mar 6 '18 at 12:34
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Loading Backbone and Underscore using RequireJS
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RequireJS 2.X now organically addresses non-AMD modules such as Backbone & Underscore much better, using the new shim configuration.
The shim configuration is simple to use: (1) one states the dependencies (deps), if any, (which may...
How do I decompile a .NET EXE into readable C# source code?
...hanged their decision and still have a free version of .Net Reflector, but now I like ILSpy.
From the ILSpy website (https://github.com/icsharpcode/ILSpy/):
ILSpy is the open-source .NET assembly browser and decompiler.
ILSpy Features
Assembly browsing
IL Disassembly
Decompilation to C#
Suppor...
How to send a message to a particular client with socket.io
I'm starting with socket.io + node.js, I know how to send a message locally and to broadcast socket.broadcast.emit() function:- all the connected clients receive the same message.
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Split string into array of character strings
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This answer does now work if you're using Java 8. See stackoverflow.com/a/22718904/1587046
– Alexis C.
Apr 25 '14 at 14:01
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