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Pros and Cons of SQLite and Shared Preferences [closed]
... are designed for this kind of data. As the data is structured and managed by the database, it can be queried to get a sub set of the data which matches certain criteria using a query language like SQL. This makes it possible to search in the data. Of course managing and searching large sets of data...
Call apply-like function on each row of dataframe with multiple arguments from each row
...,c('x','z')], 1, function(x) testFunc(x[1],x[2]))
EDIT To access columns by name and not index you can do something like this:
testFunc <- function(a, b) a + b
apply(dat[,c('x','z')], 1, function(y) testFunc(y['z'],y['x']))
...
How do you avoid over-populating the PATH Environment Variable in Windows?
...ieve Ben Voigt is right.
set test1=hello
set test2=%test1%hello
set test1=bye
echo %test2%
At the end of this, you see output hellohello rather than byehello.
EDIT 4: In case you decide to use batch files to eliminate certain paths from %PATH%, you might be concerned about how to pass on argumen...
Delete an element from a dictionary
...
pop mutates the dictionary.
>>> lol = {"hello": "gdbye"}
>>> lol.pop("hello")
'gdbye'
>>> lol
{}
If you want to keep the original you could just copy it.
share
...
How to search and replace globally, starting from the cursor position and wrapping around the end of
...he cursor position before starting actual replacements, the
line addressed by '' is the line that was the current one before
that substitution command was run. (The '' address refers to the
' pseudo-mark; see :help :range and :help '' for details.)
Note that the second command (after the | comma...
Run a single Maven plugin execution?
...
But is there a way to run one of these executions from the command line by using the execution ID perhaps?
No, not possible. What is possible though is to define "a" configuration to be used when the plugin is invoked from the command line using the "special" default-cli execution id:
<plug...
What do helper and helper_method do?
...
#application_controller.rb
def current_user
@current_user ||= User.find_by_id!(session[:user_id])
end
helper_method :current_user
the helper method on the other hand, is for importing an entire helper to the views provided by the controller (and it's inherited controllers). What this means is d...
How to exclude a module from a Maven reactor build?
...r will take in account the order in 'modules', although the order dictated by dependencies is of a higher priority.
– hellodanylo
Jul 29 '13 at 11:23
...
How to create a self-signed certificate for a domain name for development?
... -r
You can then create a certificate bound to your subdomain and signed by your new authority:
(Note that the the value of the -in parameter must be the same as the CN value used to generate your authority above.)
makecert.exe -n "CN=subdomain.example.com" -pe -ss My -sr LocalMachine
-sky exch...
How do I get an HttpContext object from HttpContextBase in ASP.NET MVC 1?
...n instance of HttpContext. So one gets at the wrapped HttpContext instance by asking HttpContextBase for HttpApplication via GetService followed by reading the Context property of the returned HttpApplication instance.
Unlike HttpContextBase, GetService does not appear as a public member of HttpCon...