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Change text color based on brightness of the covered background area?
I've thought about the following for a while already, so now I want to know your opinions, possible solutions, and so on.
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How can I request the vibrate permission?
...tor v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
// Vibrate for 300 milliseconds
v.vibrate(300);
For a more creative pattern try the star wars theme =D
v.vibrate(new long[]{0, 500, 110, 500, 110, 450, 110, 200, 110, 170, 40, 450, 110, 200, 110, 170, 40, 500}, -1);
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What is ?= in Makefile
...cates to set the KDIR variable only if it's not set/doesn't have a value.
For example:
KDIR ?= "foo"
KDIR ?= "bar"
test:
echo $(KDIR)
Would print "foo"
GNU manual: http://www.gnu.org/software/make/manual/html_node/Setting.html
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Test if a variable is set in bash when using “set -o nounset”
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Is there a reason for using "! -z" instead of just "-n" ?
– Jonathan Hartley
Aug 8 '19 at 20:55
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Call a stored procedure with parameter in c#
...however, you will use that instead of da.InsertCommand.
Also, use a using for all disposable objects, so that you are sure that they are disposed properly:
private void button1_Click(object sender, EventArgs e) {
using (SqlConnection con = new SqlConnection(dc.Con)) {
using (SqlCommand cmd =...
Entity Framework Provider type could not be loaded?
... but i installed EF 6 through Nuget. EntityFramework.SqlServer was missing for another executable. I simply added the nuget package to that project.
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ruby convert array into function arguments
...rguments. Is there a way to on the fly convert the array into 2 arguments?
For example:
2 Answers
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Postgres - FATAL: database files are incompatible with server
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Worked on 9.5 to 11 as well. Kudos for also showing how to use brew info.
– yacc
Jul 8 '19 at 9:20
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Deleting all pending tasks in celery / rabbitmq
How can I delete all pending tasks without knowing the task_id for each task?
9 Answers
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How can I center an absolutely positioned element in a div?
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Awesome. Worked for me! One problem I had: The image I was centering was quite big, this caused the outer div to go beyond the right edge of the page and cause horizontal scrolling. I swapped out the "left" css property for "right", and so f...