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What does an exclamation mark mean in the Swift language?
...
Some big picture perspective to add to the other useful but more detail-centric answers:
In Swift, the exclamation point appears in several contexts:
Forced unwrapping: let name = nameLabel!.text
Implicitly unwrapped optionals: var logo: UIImageView!
Forced casting: logo.image = thing a...
What are the differences between the threading and multiprocessing modules?
...on or in order of completion, etc.; read the section on Future objects for details.
Now, if it turns out that your program is constantly using 100% CPU, and adding more threads just makes it slower, then you're running into the GIL problem, so you need to switch to processes. All you have to do is ...
How to Git stash pop specific stash in 1.8.3?
... depending on your OS, shell, etc.
See "stash@{1} is ambiguous?" for some detailed hints of what may be going wrong, and how to work around it in various shells and platforms.
git stash list
git stash apply stash@{n}
git stash apply version
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Git and Mercurial - Compare and Contrast
...ub), but Google Code supports Mercurial only. By the way, they have a very detailed comparison of Mercurial and Git they did for deciding which one to support (http://code.google.com/p/support/wiki/DVCSAnalysis). It has a lot of good info.
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How to remove leading and trailing zeros in a string? Python
... in iterables)
# ['231512-n', '12091231000-n', 'alphanum', 'alphanum']
Details
Notice, here we strip both leading and trailing "0"s among other elements that satisfy a predicate. This tool is not limited to strings.
See also docs for more examples of
more_itertools.strip: strip both ends...
How to comment lines in rails html.erb files? [duplicate]
...ld also work with STD OUT/printing code, e.g. <%#= f.label :title %>
DETAILS:
Rather than use rails brackets on each line and commenting in front of each starting bracket as we usually do like this:
<%# if flash[:myErrors] %>
<%# if flash[:myErrors].any? %>
<%# if ...
in Ipython notebook / Jupyter, Pandas is not displaying the graph I try to plot
...b.pyplot as plt
See this post from the ipython-dev mailing list for more details.
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Why use prefixes on member variables in C++ classes
...ed to waste time looking elsewhere in the code or remembering every little detail of it when the answer is right on the spot your eye is already focussed on.
(Some of) that information can be found by just waiting for a tooltip to pop up on my variable. Yes. Where supported, for some types of prefix...
What does InitializeComponent() do, and how does it work in WPF?
...he object that is specified by the root element of the XAML file.
In more detail, LoadComponent creates an instance of the XamlParser, and builds a tree of the XAML. Each node is parsed by the XamlParser.ProcessXamlNode(). This gets passed to the BamlRecordWriter class. Some time after this I get a...
Display names of all constraints for a table in Oracle SQL
...E FROM USER_CONS_COLUMNS WHERE TABLE_NAME = 'TBL_CUSTOMER';
--OR FOR LESS DETAIL
SELECT CONSTRAINT_NAME FROM USER_CONSTRAINTS WHERE TABLE_NAME = 'TBL_CUSTOMER';
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