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Can you have if-then-else logic in SQL? [duplicate]
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106
You can make the following sql query
IF ((SELECT COUNT(*) FROM table1 WHERE project = 1) > ...
How to serve an image using nodejs
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2016 Update
Examples with Express and without Express that actually work
This question is over 5 years old but every answer has some problems.
TL;DR
Scroll down for examples to serve an image with:
express.static
express...
CSS background image to fit width, height should auto-scale in proportion
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10 Answers
10
Active
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How to change ProgressBar's progress indicator color in Android
...t="wrap_content"
android:indeterminate="false"
android:maxHeight="10dip"
android:minHeight="10dip"
android:progress="50"
android:progressDrawable="@drawable/greenprogress" />
Then create a new drawable with something similar to the following (In this case greenprogress.xml):...
Docker how to change repository name or rename image?
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1085
docker image tag server:latest myname/server:latest
or
docker image tag d583c3ac45fd myname...
Converting A String To Hexadecimal In Java
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200
Here's a short way to convert it to hex:
public String toHex(String arg) {
return String.f...
Error: could not find function … in R
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10 Answers
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How to run a single test from a rails test suite?
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160
NOTE: This doesn't run the test via rake. So any code you have in Rakefile will NOT get executed...
How to get the day of week and the month of the year?
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answered Jan 27 '11 at 22:50
user113716user113716
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Swift make method parameter mutable?
...passing in a pointer.
func reduceToZero(_ x: inout Int) {
while (x != 0) {
x = x-1
}
}
var a = 3
reduceToZero(&a)
print(a) // will print '0'
This can be particularly useful in recursion.
Apple's inout declaration guidelines can be found here.
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