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ERROR: Error 1005: Can't create table (errno: 121)
...ata directory in command line:
find . -iname '#*'
After discovering the filename, such as #sql-9ad_15.frm, I was able to drop that orphaned table in MySQL:
USE myschema;
DROP TABLE `#mysql50##sql-9ad_15`;
After doing so, I was then able to successfully run my ALTER TABLE.
For completeness, as...
How can I do DNS lookups in Python, including referring to /etc/hosts?
...import socket
print(socket.gethostbyname('localhost')) # result from hosts file
print(socket.gethostbyname('google.com')) # your os sends out a dns query
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Maven project.build.directory
...ml. This allows you to see the properties without opening up the local jar file.
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Multiple controllers with AngularJS in single page app
... .html, instead you will have one main index.html and several NESTED .html file. So why single page app? Because this way you do not load pages the standard way (i.e. browser call that completely refreshes the full page) but you just load the content part using Angular/Ajax. Since you do not see the...
What is scope/named_scope in rails?
...stead of always writing this you could, however, do something like this.
#File: users.rb
class User < ActiveRecord::Base
scope :newsletter, where(subscribed_to_newsletter: true)
#yada yada
end
If you're using Rails 4 or newer, do this instead:
#File: users.rb
class User < ActiveRecord:...
What exactly do the Vagrant commands do?
...y is being used is useful. You could do use normal ssh command - ssh -i keyfile ..
vagrant status <vmname>
This command is a wrapper which provides the information on the status of vm. It could be running, saved and powered off.
vagrant reload
If you make any changes to the configuration in ...
What's the difference between ngModel.$modelValue and ngModel.$viewValue
...ive or an Object in your custom controls. A good example, is the <input file="type"> component, where viewValue contains FileList object with files attached by the user. The Angular docs are confusing about this right now and should be updated.
– demisx
F...
How to check if APK is signed or “debug build”?
...
First add this to your build.gradle file, this will also allow side by side running of debug and release builds:
buildTypes {
debug {
applicationIdSuffix ".debug"
}
}
Add this method:
public static boolean isDebug(Context context) {
Stri...
How do I check for a network connection?
... on www.msftncsi.com, then requests http://www.msftncsi.com/ncsi.txt. This file is a plain-text file and contains only the text 'Microsoft NCSI'.
NCSI sends a DNS lookup request for dns.msftncsi.com. This DNS address should resolve to 131.107.255.255. If the address does not match, then it is assume...
Renaming table in rails
..., running rake db:migrate or rake db:rollback will not rename the model.rb file. You will need to manually change the model.rb file.
– 9monkeys
Jun 8 '12 at 14:00
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