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Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...s after the Ruby initialize. Hence it is run every time a record is loaded from the database and used to create a new model object in memory, so don't use this callback if what you want is just to set default values the first time you add a new record. If you want to do that, use before_create and n...
Convert column classes in data.table
... You might want to add what names_factors is here. I guess it's taken from stackoverflow.com/a/20808945/1666063 so it's names_factors = c('fac1', 'fac2') in this case - which is column names.But it could also be column numbers for example 1;ncol(dt) which would convert all columns
...
How to tell when UITableView has completed ReloadData?
...: and tableView:numberOfRowsInSection: to its data source before returning from reloadData. If the delegate implements tableView:heightForRowAtIndexPath:, the table view also sends that (for each row) before returning from reloadData.
However, the table view does not send tableView:cellForRowAtInd...
Does it make sense to use “as” instead of a cast even if there is no null check? [closed]
... is+cast is enough to trigger a "Do not cast unnecessarily" warning from FxCop: msdn.microsoft.com/en-us/library/ms182271.aspx That should be enough reason to avoid the construct.
– David Schmitt
Jan 27 '10 at 16:47
...
How can I get the diff between all the commits that occurred between two dates with Git?
... solution.
Things I have tried:
git whatchanged --since="1 day ago" -p from here
But this gives a diff for each commit, even if there are multiple commits in one file. I know that "date" is a bit of a loose concept in git, I thought there must be some way to do this.
git diff 'master@{1 day ago...
CSS background image to fit width, height should auto-scale in proportion
...
Based on tips from https://developer.mozilla.org/en-US/docs/CSS/background-size I end up with the following recipe that worked for me
body {
overflow-y: hidden ! important;
overflow-x: hidden ! important;
backgroun...
Handler “ExtensionlessUrlHandler-Integrated-4.0” has a bad module “ManagedPipelineHandler” in its mo
...ting namespace provides the functionality for hosting ASP.NET applications from managed applications outside Microsoft Internet Information Services (IIS).
The solution
I would recommend removing the call to SimpleWorkerRequest. Instead, you can use a Microsoft solution to make sure your web site...
Replace non-ASCII characters with a single space
... representation of your original string I recommend the unidecode module:
from unidecode import unidecode
def remove_non_ascii(text):
return unidecode(unicode(text, encoding = "utf-8"))
Then you can use it in a string:
remove_non_ascii("Ceñía")
Cenia
...
Junit - run set up method once
...have said to AlexR, his solution requires all the test classes to subclass from a CommonTest class if it is only to run once. But it is simple as simple can be, and IMHO you probably shouldn't use a "fancy" framework-supplied solution when a simple mechanism is available from the language. Unless ...
Difference between System.DateTime.Now and System.DateTime.Today
...o.ConvertTime(DateTime.UtcNow, TimeZoneInfo.Local)
TimeZoneInfo.ConvertTimeFromUtc(DateTime.UtcNow, TimeZoneInfo.Local)
DateTime.Today returns a DateTime value that has the same year, month, and day components as any of the above expressions, but with the time components set to zero. It also has ...