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Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...n see that our default object is being reused and mutated (this is because it is passed as the one and only default value, the hash has no way of getting a fresh, new default value), but why are there no keys or values in the array, despite h[1] still giving us a value? Here’s a hint:
h[42] #=&g...
How do I improve ASP.NET MVC application performance?
...ance problems in your application. personally I suggest dotTrace
Run your site in Release mode, not Debug mode, when in production, and also during performance profiling. Release mode is much faster. Debug mode can hide performance problems in your own code.
Caching
Use CompiledQuery.Compile()...
How do I drop a function if it already exists?
...know this must be simple, but how do I preface the creation of a function with a check to see if it already exists? If it exists, I want to drop and re-create it.
...
Visual Studio Expand/Collapse keyboard shortcuts [duplicate]
...
Collapse to definitions
CTRL + M, O
Expand all outlining
CTRL + M, X
Expand or collapse everything
CTRL + M, L
This also works with other languages like TypeScript and JavaScript
...
jQuery set checkbox checked
I already tried all the possible ways, but I still didn't get it working.
I have a modal window with a checkbox I want that when the modal opens, the checkbox check or uncheck should be based on a database value. (I have that already working with others form fields.) I started trying to get it c...
What happens with constraints when a view is removed
...are removed. If you add A again, you will have to make new constraints for it, or if you save the constraints before you remove A, you can add them back. When I do something like this, I save the constraints like this for a view called view1:
self.portraitConstraints = [NSMutableArray new];
for (NS...
Angularjs - display current date
...follow
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edited Mar 14 '19 at 9:48
answered Apr 9 '14 at 12:36
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Convert an image to grayscale in HTML/CSS
Is there a simple way to display a color bitmap in grayscale with just HTML/CSS ?
25 Answers
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Run command on the Ansible host
Is it possible to run commands on the Ansible host?
8 Answers
8
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Unable to create/open lock file: /data/mongod.lock errno:13 Permission denied
...to /var/lib/mongodb (existing path) and I changed the /data/db (new path) with chown and chgrp to match. (example: sudo chown -R mongodb:mongodb /data/db)
Then I updated the path in etc/mongodb.conf to /data/db and deleted the old mongo files in /var/lib/mongodb directory.
Then I ran sudo service mo...