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What makes a SQL statement sargable?
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258
The most common thing that will make a query non-sargable is to include a field inside a funct...
Different results with Java's digest versus external utilities
...le. I am using Windows 7 Professional with SP1 . I have tried Java 6.0.29 and Java 7.0.03 . Can someone tell me why I am getting different hash values from Java versus (many!) external utilities and/or websites? Everything external matches with each other, only Java is returning different re...
iPhone 5 CSS media query
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285
Another useful media feature is device-aspect-ratio.
Note that the iPhone 5 does not have a 1...
How to keep index when using pandas merge
...rge(b, how="left").set_index('index')
Out[5]:
col1 to_merge_on col2
index
a 1 1 1
b 2 3 2
c 3 4 NaN
Note that for some left merge operations, you may end up with more rows than in a when there are multiple matches between a...
Disable building workspace process in Eclipse
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102
Building workspace is about incremental build of any evolution detected in one of the opened pro...
TFS: Updating branch with changes from main
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edited Feb 28 '14 at 10:06
geographika
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How to generate a random string of a fixed length in Go?
...olution is perfect. This is if performance does matter. Although the first 2 steps (Bytes and Remainder) might be an acceptable compromise: they do improve performance by like 50% (see exact numbers in the II. Benchmark section), and they don't increase complexity significantly.
Having said that, ...
Why does Eclipse Java Package Explorer show question mark on some classes?
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edited Jan 19 '16 at 9:42
Mohammad Faisal
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Javascript !instanceof If Statement
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edited Jan 18 '19 at 21:05
answered Jan 16 '12 at 4:51
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ReactJS: Modeling Bi-Directional Infinite Scrolling
...ined across renders. There are two strategies: (1) have only n keys (0, 1, 2, ... n) where n is the maximum number of elements you can display and use their position modulo n. (2) have a different key per element. If all the elements share a similar structure it's good to use (1) to reuse their DOM ...
