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How to test an SQL Update statement before running it?
...e as the UPDATE.
So if you UPDATE is
UPDATE foo
SET bar = 42
WHERE col1 = 1
AND col2 = 'foobar';
The following will show you which rows will be updated:
SELECT *
FROM foo
WHERE col1 = 1
AND col2 = 'foobar';
shar...
ggplot2 legend to bottom and horizontal
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147
If you want to move the position of the legend please use the following code:
library(reshap...
Why does javascript map function return undefined?
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187
You aren't returning anything in the case that the item is not a string. In that case, the fun...
Rails migration: t.references with alternative name?
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168
You can do this all in the initial migration/column definition (at least currently in Rails 5)...
How to parse JSON in Python?
...
Very simple:
import json
data = json.loads('{"one" : "1", "two" : "2", "three" : "3"}')
print data['two']
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How to get maximum value from the Collection (for example ArrayList)?
...aximum value in this list. E.g. suppose the arrayList stored values are : 10, 20, 30, 40, 50 and the max
value would be 50 .
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XML schema or DTD for logback.xml?
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edited Jul 4 '17 at 10:25
answered Dec 24 '12 at 20:37
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How can I calculate the time between 2 Dates in typescript
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160
Use the getTime method to get the time in total milliseconds since 1970-01-01, and subtract th...
Dealing with “Xerces hell” in Java/Maven?
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