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Should logger be private static or not
...instance of the class. This may not per se be expensive, but it adds a significant overhead. If you'd like to avoid this, you'd like to use the static form instead. But its disadvantage is in turn that you have to declare it in every individual class and take care in every class that the right class...
Counting DISTINCT over multiple columns
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If you are trying to improve performance, you could try creating a persisted computed column on either a hash or concatenated value of the two columns.
Once it is persisted, provided the column is deterministic and you are ...
Insert results of a stored procedure into a temporary table
...ver, but you would need to get the connection string right...and also, specify the full path to the stored procedure including the database name and the sp's owner.
– MartW
Aug 11 '09 at 12:30
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Large Object Heap Fragmentation
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85000 bytes. You can verify this by creating a byte array of 85000-12 (size of length, MT, sync block) and calling GC.GetGeneration on the instance. This will return Gen2 - the API doesn't distinguish between Gen2 and LOH. Make the array one byte sm...
Git undo local branch delete
...;
Edit: As @seagullJS says, the branch -D command tells you the sha1, so if you haven't closed the terminal yet it becomes real easy. For example this deletes and then immediately restores a branch named master2:
user@MY-PC /C/MyRepo (master)
$ git branch -D master2
Deleted branch master2 (was 13...
RegEx: Grabbing values between quotation marks
...explanation from user ephemient:
([""']) match a quote; ((?=(\\?))\2.) if backslash exists, gobble it, and whether or not that happens, match a character; *? match many times (non-greedily, as to not eat the closing quote); \1 match the same quote that was use for opening.
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Rails update_attributes without save?
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@Robin I'll update the example to be a bit more specific. The example in the docs is also a bit misleading, as it doesn't mention that user.assign_attributes({ :name => 'Josh', :is_admin => true }) raises an error message and doesn't actually set the user's name property...
Can we pass parameters to a view in SQL?
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What are the practical differences between this and a view? Can you assign user permissions to only access this function?
– MikeMurko
Oct 22 '12 at 17:44
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What file uses .md extension and how should I edit them?
...tensions .md and .markdown are just text files written in Markdown syntax. If you have a Readme.md in your repo, GitHub will show the contents on the home page of your repo. Read the documentation:
Standard Markdown
GitHub Flavored Markdown
You can edit the Readme.md file in GitHub itself. Click...
How to convert the background to transparent? [closed]
...background and the border is not part of the image]
File menu/Save Image
GIF/PNG/ICO image file formats support transparency, JPG doesn't!
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