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Instance variables vs. class variables in Python
...method resolution order)
Both techniques work in an "inside-out" manner, meaning the most local objects are checked first, then outer layers are checked in succession.
In your example above, let's say you're looking up the path attribute. When it encounters a reference like "self.path", Python wi...
How can I run an external command asynchronously from Python?
...need to run a shell command asynchronously from a Python script. By this I mean that I want my Python script to continue running while the external command goes off and does whatever it needs to do.
...
XPath - Selecting elements that equal a value
... accepting / upvoting ? text() is one of the possible node-tests in XPath, meaning "is this a text node?". Other nodetests are comment(), processing-instruction(), or just node().
– Dimitre Novatchev
Jul 8 '10 at 20:55
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Xcode Project vs. Xcode Workspace - Differences
...brief
Xcode 3 introduced subproject, which is parent-child relationship, meaning that parent can reference its child target, but no vice versa
Xcode 4 introduced workspace, which is sibling relationship, meaning that any project can reference projects in the same workspace
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multi-step registration process issues in asp.net mvc (split viewmodels, single model)
...attributes specific to this given view. So if you have 3 steps wizard this means that you will have 3 view models, one for each step:
public class Step1ViewModel
{
[Required]
public string SomeProperty { get; set; }
...
}
public class Step2ViewModel
{
[Required]
public string ...
Is there any way to prevent input type=“number” getting negative values?
...phabetical keys (except for characters like "e" which can have a numerical meaning). It would probably suffice to prevent against 189 (dash) and 109 (subtract). And then combine with min="0".
– Hugh Guiney
Feb 22 '16 at 16:31
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GDB corrupted stack frame - How to debug?
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What means bogus?
– Danny Lo
May 17 '17 at 11:12
5
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What is the best way to uninstall gems from a rails3 project?
...ch as rbenv or rvm to keep sets of gems scoped to specific projects.
This means that no gems will be installed at a global level and therefore when you remove one from your project's Gemfile and rerun bundle then it, obviously, won't be loaded in your project. Then, you can run bundle clean (with t...
git: How do I get the latest version of my code?
...s first. Do a git status to see what are the files that need to be merged (means you need to resolve the conflicts first). Once this is done, do git add file_merged and do your pull again.
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SQLAlchemy default DateTime
...le, if you write an ad hoc script against this table, using server_default means you won't need to worry about manually adding a timestamp call to your script--the database will set it automatically.
Understanding SQLAlchemy's onupdate/server_onupdate
SQLAlchemy also supports onupdate so that anytim...