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How to drop SQL default constraint without knowing its name?
...ver, I know the query to check if a default constraint exists for a column and drop a default constraint is:
14 Answers
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Does name length impact performance in Redis?
...ET (10 keys)",cmd,len);
free(cmd);
- len = redisFormatCommand(&cmd,"SET foo:rand:000000000000 %s",data);
+ len = redisFormatCommand(&cmd,"SET foo %s",data);
benchmark("SET",cmd,len);
free(cmd);
- len = redisFormatCommand(&cmd,"GET foo:ran...
How to Vertical align elements in a div?
I have a div with two images and an h1 . All of them need to be vertically aligned within the div, next to each other.
29 ...
How can I find the first occurrence of a sub-string in a python string?
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@Regressor: look into regex and word boundaries.
– mechanical_meat
Apr 12 at 23:29
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Determine the data types of a data frame's columns
I'm using R and have loaded data into a dataframe using read.csv() . How do I determine the data type of each column in the data frame?
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scala vs java, performance and memory? [closed]
I am keen to look into Scala, and have one basic question I cant seem to find an answer to:
in general, is there a difference in performance and usage of memory between Scala and Java?
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How do I install Maven with Yum?
...g not to learn much about either yum or maven. I've inherited this code and I don't want to spend more time than I have to in this environment.
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stopPropagation vs. stopImmediatePropagation
What's the difference between event.stopPropagation() and event.stopImmediatePropagation() ?
9 Answers
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What are the advantages of NumPy over regular Python lists?
... single-precision floats in the cells would fit in 4 MB. Access in reading and writing items is also faster with NumPy.
Maybe you don't care that much for just a million cells, but you definitely would for a billion cells -- neither approach would fit in a 32-bit architecture, but with 64-bit build...
Maven plugins can not be found in IntelliJ
...ment -> Build Tools -> Maven (IntelliJ Ultimate 2020.2 on Ubuntu)... and then I needed to invalidate caches and restart (File -> Invalid Caches / Restart). Problem solved, thank you!
– Lambart
Aug 20 at 21:25
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