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`require': no such file to load — mkmf (LoadError)
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After some search for a solution it turns out the -dev package is needed, not just ruby1.8. So if you have ruby1.9.1 doing
sudo apt-get install ruby1.9.1-dev
or to install generic ruby version, use (as per @lamplightdev comment):
sudo apt-get install...
Open Redis port for remote connections
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Did you set the bind option to allow remote access on the redis server?
Before (file /etc/redis/redis.conf)
bind 127.0.0.1
After
bind 0.0.0.0
and run sudo service redis-server restart to restart the server. If that's not the problem, you migh...
UIButton: set image for selected-highlighted state
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I found the solution: need to add addition line
[button setImage:[UIImage imageNamed:@"pressed.png"] forState:UIControlStateSelected | UIControlStateHighlighted];
s...
Java Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable
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Please, read: this stackoverflow.com/questions/20607777/…
– Felix Aballi
Feb 20 '19 at 17:36
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Example images for code and mark-up Q&As [closed]
...et icons
Animated
GIF is the only image format that supports animation. Here are a few examples.
Categories: gif animated-gif
Solid BG
Animated dashed border as seen in this answer.
Details: 100x30 px with filled BG (no transparency)
Zooming stars as seen in this answer, origina...
Python script to copy text to clipboard [duplicate]
...'t persist after running from the script, refer to this issue for the solution.
– xtluo
Jun 10 '19 at 7:28
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Make an image width 100% of parent div, but not bigger than its own width
I’m trying to get an image (dynamically placed, with no restrictions on dimensions) to be as wide as its parent div, but only as long as that width isn’t wider than its own width at 100%. I’ve tried this, to no avail:
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Node / Express: EADDRINUSE, Address already in use - Kill server
... put that inside the exit event...
On crash, do process.on('uncaughtException', ..) and on kill do process.on('SIGTERM', ..)
That being said, SIGTERM (default kill signal) lets the app clean up, while SIGKILL (immediate termination) won't let the app do anything.
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Add a column to a table, if it does not already exist
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You can use a similar construct by using the sys.columns table io sys.objects.
IF NOT EXISTS (
SELECT *
FROM sys.columns
WHERE object_id = OBJECT_ID(N'[dbo].[Person]')
AND name = 'ColumnName'
)
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How to generate serial version UID in Intellij
When I used Eclipse it had a nice feature to generate serial version UID.
5 Answers
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