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Do Git tags only apply to the current branch?
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If you create a tag by e.g.
git tag v1.0
the tag will refer to the most recent commit of the branch you are currently on. You can change branch and create a tag there.
You can also just refer to the other branch while tag...
Where should Rails 3 custom validators be stored?
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If you place your custom validators in app/validators they will be automatically loaded without needing to alter your config/application.rb file.
sha...
UTF-8: General? Bin? Unicode?
...general_ci is faster than utf8_unicode_ci, but less correct.
Here is the difference:
For any Unicode character set, operations performed using the _general_ci collation are faster than those for the _unicode_ci collation. For example, comparisons for the utf8_general_ci collation are faster, b...
Automapper - how to map to constructor parameters instead of property setters
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Use ConstructUsing
this will allow you to specify which constructor to use during the mapping. but then all of the other properties will be automatically mapped according to the conventions.
Also note that this is different from ConvertUsing in that convert using will n...
Smooth GPS data
...cation as a latitude and longitude, together with an accuracy which is specified as a single number measured in metres. This means that instead of a covariance matrix, the accuracy in the Kalman filter can be measured by a single number, even though the location in the Kalman filter is a measured b...
Center a position:fixed element
...op and margin-left to the negative half of the div's height and width to shift the center towards the middle of the div.
Thus, provided a <!DOCTYPE html> (standards mode), this should do:
position: fixed;
width: 500px;
height: 200px;
top: 50%;
left: 50%;
margin-top: -100px; /* Negative half ...
SQL Query to concatenate column values from multiple rows in Oracle
... Yes we can do this work!
3 rows selected.
I wrote about this here. And if you follow the link to the OTN-thread you will find some more, including a performance comparison.
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How do I copy directories recursively with gulp?
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How do you do this with a specific file extension?
– Chev
Mar 19 '15 at 22:40
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What is a Context Free Grammar?
... certain properties. In computer science, grammars describe languages; specifically, they describe formal languages.
A formal language is just a set (mathematical term for a collection of objects) of strings (sequences of symbols... very similar to the programming usage of the word "string"). A sim...
Are static methods inherited in Java?
I was reading A Programmer’s Guide to
Java™ SCJP Certification by Khalid Mughal.
14 Answers
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