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Extracting bits with a single multiplication
...00
00000000a00b0000 +
----------------
000000a0ab0b0000
xxxxxxxxab......
From this approach you can extend to larger numbers and more bits.
One of the questions you asked was "can this be done with any number of bits?" I think the answer is "no", unless you allow several masking operations, or se...
Get current date/time in seconds
... get the difference between time() being our current time and a time stamp from a previous time that had been stored in a database say when a user posted something. In the event you'd like to get a formatted time like 'October 22nd, 2015' you can craft your own function to return that from a timesta...
best way to preserve numpy arrays on disk
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From my experiences, hdf5 performances very slow reading and writing with chunk storage and compression enabled. For example, I've two 2-D arrays with shape (2500,000 * 2000) with chunk size (10,000 * 2000). A single write op...
How to trim leading and trailing white spaces of a string?
... to trim strings in go.
See them there : Trim
Here's an example, adapted from the documentation, removing leading and trailing white spaces :
fmt.Printf("[%q]", strings.Trim(" Achtung ", " "))
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What does “javascript:void(0)” mean?
... error. It's invalid javascript. Douglas crockford reccomends staying away from void because of the unary operator/function/value confusion is too costly to deal with.
– Breton
Aug 18 '09 at 6:05
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techniques for obscuring sensitive strings in C++
...acter, so the whole string is never around. Of course, if you are using it from something like RSA encoding, then this is trickier.
4) Do an ad-hoc algorithm -- on top of all this, add a unique twist or two. Maybe just add 1 to everything you produce, or do any encryption twice, or add a sugar. Thi...
How to concatenate two MP4 files using FFmpeg?
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FOR MP4 FILES
For .mp4 files (which I obtained from DailyMotion.com: a 50 minute tv episode, downloadable only in three parts, as three .mp4 video files) the following was an effective solution for Windows 7, and does NOT involve re-encoding the files.
I renamed the file...
Is there any NoSQL data store that is ACID compliant?
...em to be tackling the idea of distributed updates which take place within (from a consumer perspective) arbitrary time frames. This is basically a specialized form of replication managed via transaction - so I would say that if a traditional distributed database can support ACID, so can a NoSQL data...
Find size of object instance in bytes in c#
...erializer wanted it, for "serializer" purposes. Those are likely different from the "sit-in-memory" purposes. Maybe serializer stores smaller integers in three bytes, for instance.
– John Saunders
Jul 14 '09 at 23:34
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How to add local jar files to a Maven project?
...re is removed, well, there are lots of good answers here which I can chose from later!
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