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Why would you use Expression rather than Func?

...ment and submits it to server (rather than executing the lambda). Conceptually, Expression<Func<T>> is completely different from Func<T>. Func<T> denotes a delegate which is pretty much a pointer to a method and Expression<Func<T>> denotes a tree data structure f...
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How do I create a readable diff of two spreadsheets using git diff?

...e a lot of spreadsheets (xls) in our source code repository. These are usually edited with gnumeric or openoffice.org, and are mostly used to populate databases for unit testing with dbUnit . There are no easy ways of doing diffs on xls files that I know of, and this makes merging extremely tedio...
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Is there an MD5 Fixed Point where md5(x) == x?

...ng. Assuming that the MD5 sum of any string is uniformly distributed over all possible sums, then the probability that any given 128-bit string is a fixed point is 1/2128. Thus, the probability that no 128-bit string is a fixed point is (11/2128)2128, so the probability that there is a fixed ...
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How do you maintain development code and production code? [closed]

...art of a feature branch. Original answer (Oct. 2008, 10+ years ago) It all depends of the sequential nature of your release management First, is everything in your trunk really for the next release? You might find out that some of the currently developed functions are: too complicated and sti...
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How to delete last character in a string in C#?

...he title. My complaint: if you are going to be fluent, why not just do it all in one line. – Graham Jul 24 '15 at 21:34 add a comment  |  ...
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Postgresql - change the size of a varchar column to lower length

I have a question about the ALTER TABLE command on a really large table (almost 30 millions rows). One of its columns is a varchar(255) and I would like to resize it to a varchar(40) . Basically, I would like to change my column by running the following command: ...
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Android adding simple animations while setvisibility(view.Gone)

...yout like changing view visibility or view positions android will automatically create fade/transition animations. To use that set android:animateLayoutChanges="true" on the root node in your layout. Your second option would be to manually add animations. For this I suggest you use the new anim...
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Couldn't register with the bootstrap Server

...r from this by unplugging the iPad, powering it down and back up, clearing all XCode caches and targets, and doing a clean build. I'm running XCode 3.5.4 and iOS 4.2.1 Hope this helps someone. -Mike UPDATE: Same problem running Xcode 4.3 and iOS5 - just power-cycle the device. ...
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How to get names of classes inside a jar file?

I have a JAR file and I need to get the name of all classes inside this JAR file. How can I do that? 12 Answers ...
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Tools to search for strings inside files without indexing [closed]

...it would be a great idea to plaster the entire app with connection strings all over the place. 6 Answers ...