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ImportError: No module named matplotlib.pyplot
...our life easy!
Step 1: Install pip - Check if you have pip already simply by writing pip in the python console. If you don't have pip, get a python script called get-pip.py , via here: https://pip.pypa.io/en/latest/installing.html or directly here: https://bootstrap.pypa.io/get-pip.py (You may have...
Devise - How do I forbid certain users from signing in?
...e User model:
class User < ActiveRecord::Base
#this method is called by devise to check for "active" state of the model
def active_for_authentication?
#remember to call the super
#then put our own check to determine "active" state using
#our own "is_active" column
super and ...
Replace string within file contents
... terminated - either normally when the last command finishes executing, or by an exception.
def inplace_change(filename, old_string, new_string):
# Safely read the input filename using 'with'
with open(filename) as f:
s = f.read()
if old_string not in s:
print('"...
How to uninstall npm modules in node js?
As commonly known, any npm module can be installed by running a simple command: npm install <module_name> .
21 Answe...
Akka Kill vs. Stop vs. Poison Pill?
... All messages that are ahead of it in the queue will be processed first.
By contrast, the Kill message causes the actor to throw an ActorKilledException which gets handled using the normal supervisor mechanism. So the behaviour here depends on what you've defined in your supervisor strategy. The ...
Add horizontal scrollbar to html table
...
As said by others this doesn't work properly: table rows don't fill the table width.
– collimarco
Aug 10 '17 at 10:58
...
Why are local variables not initialized in Java?
...of the variable and it should not take a default value. If the programmer, by mistake, did not initialize a local variable and it take default value, then the output could be some unexpected value. So in case of local variables, the compiler will ask the programmer to initialize with some value befo...
Delete Local Folder in TFS
...
You can cloak the folder in your local workspace.
By setting the working folder status to Cloaked, you can specify that a local folder should not copy files from the server when you perform a Get operation. You might choose to do this to conserve space on your local disk. If...
Using git commit -a with vim
...e a file with :wEnter while in the normal mode (you get to the normal mode by pressing Esc).
You close your file with :q while in the normal mode.
You can combine both these actions and do Esc:wqEnter to save the commit and quit vim.
As an alternate to the above, you can also press ZZ while in th...
Getting the last element of a split string array
... Issue here is that pop() also removes that element from the array, thereby changing it.
– slashwhatever
Apr 10 '12 at 15:40
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