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Manually raising (throwing) an exception in Python
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raise RuntimeError('specific message') from error
Be aware:
this does allow changing the error type raised, and
this is not compatible with Python 2.
Deprecated Methods:
These can easily hide and even get into production code. You want to raise an exception, and doing them will raise an...
What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
...t that I compiled with Xcode 4.5. It runs fine on an iPad running iOS5. It does not compile on Xcode 4.2, which is how I found out that I did it.
– JScarry
Dec 13 '12 at 22:04
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Can scrapy be used to scrape dynamic content from websites that are using AJAX?
...es it will be easier to get your data than parsing HTML, because that data does not contain presentation logic and is formatted to be accessed by javascript code.
Firefox has similar extension, it is called firebug. Some will argue that firebug is even more powerful but I like the simplicity of web...
Representing and solving a maze given an image
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@JosephKern Path doesn't overlap any walls. Just remove all the red pixels and here you go.
– Mikhail
Oct 30 '12 at 19:22
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Difference between Observer, Pub/Sub, and Data Binding
...generally aware of only a queue where it publishes its events/messages. It doesn't know how many consumers have subscribed to that queue.
– Param
Jul 2 '14 at 6:55
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What is the (best) way to manage permissions for Docker shared volumes?
... containers that use -volumes-from the data container, so the host uid/gid doesn't matter.
For example, one use case given in the documentation is backing up a data volume. To do this another container is used to do the backup via tar, and it too uses -volumes-from in order to mount the volume. So ...
Improving bulk insert performance in Entity framework [duplicate]
...the Add method tries to DetectChanges at every entity added while AddRange does it once after all entities have been added to the context.
Common solutions are:
Use AddRange over Add
SET AutoDetectChanges to false
SPLIT SaveChanges in multiple batches
Using SaveChanges
Entity Framework has not...
Line-breaking widget layout for Android
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Just a heads up it doesn't work in any scrolling container! :(
– JakeWilson801
Jul 11 '16 at 18:57
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what is the difference between a portlet and a servlet?
...e.
The content type of JSR 168 portlets can be only cHTML, XHTML, WML. It
does not support other content types.
Portlets are not allowed to generate HTML code that contains tags such
as body, frame, frameset, head, html, or title.
A Portlet unlike a servlet doesn’t have URL attached to it so it...
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
...ult. You can change this behavior by adding .drop = FALSE . However, this doesn't work when using summarise with dplyr . Is there another way to keep empty categories in the result?
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