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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...
How to generate gcc debug symbol outside the build target?
...
187
You need to use objcopy to separate the debug information:
objcopy --only-keep-debug "${tostr...
Android: alternate layout xml for landscape mode
...
218
By default, the layouts in /res/layout are applied to both portrait and landscape.
If you have...
Error:(1, 0) Plugin with id 'com.android.application' not found
...
Updated Answer (Apr. 10, 2020)
Latest Gradle: 6.3
Version check:
./gradlew -v
How to update:
Set URL: ./gradlew wrapper --gradle-version=3.6.2 --distribution-type=all
Update: ./gradlew wrapper
Latest Android Gradle Plugin: 3.6.2
If you add th...
ggplot2 legend to bottom and horizontal
...
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?
...
187
You aren't returning anything in the case that the item is not a string. In that case, the fun...
Python Linked List
... a linked list in python? In scheme, a linked list is defined simply by '(1 2 3 4 5) . Python's lists, [1, 2, 3, 4, 5] , and tuples, (1, 2, 3, 4, 5) , are not, in fact, linked lists, and linked lists have some nice properties such as constant-time concatenation, and being able to reference separa...
Get nodes where child node contains an attribute
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176
Try
//book[title/@lang = 'it']
This reads:
get all book elements
that have at least one...