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C# DateTime.Now precision

...ith DateTime.UtcNow while doing some unit tests. It appears that when you call DateTime.Now/UtcNow in rapid succession, it seems to give you back the same value for a longer-than-expected interval of time, rather than capturing more precise millisecond increments. ...
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Search text in stored procedure in SQL Server

I want to search a text from all my database stored procedures. I use the below SQL: 22 Answers ...
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Can I squash commits in Mercurial?

I have a pair of commits that should really be just one. If I was using git, I would use: 8 Answers ...
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Package doesn't exist error in intelliJ

... I tried to "Maven > Reimport" but the only thing that actually fixed it was to close the project, delete the .idea directory, and reopen the project. share | improve this answer ...
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Codesign error: Certificate identity appearing twice

...same problem. It has been fixed. It came after I submitted an app and installed a few certificates to sign the app. Quick Fix: Open up KEYCHAIN ACCESS > click on MY CERTIFICATES> in there you will probably see iPhone Developer: . You will probably see it TWICE! Select the one with the earl...
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On logout, clear Activity history stack, preventing “back” button from opening logged-in-only Activi

All activities in my application require a user to be logged-in to view. Users can log out from almost any activity. This is a requirement of the application. At any point if the user logs-out, I want to send the user to the Login Activity . At this point I want this activity to be at the bottom of...
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What do helper and helper_method do?

helper_method is straightforward: it makes some or all of the controller's methods available to the view. 1 Answer ...
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Why it's not possible to use regex to parse HTML/XML: a formal explanation in layman's terms

...omaton has no memory - no stack, no heap, no infinite tape to scribble on. All it has is a finite number of internal states, each of which can read a unit of input from the string being tested, and use that to decide which state to move to next. As special cases, it has two termination states: "yes,...
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What is android:weightSum in android, and how does it work?

...e maximum weight sum, and is calculated as the sum of the layout_weight of all the children if not specified explicitly. Let's consider an example with a LinearLayout with horizontal orientation and 3 ImageViews inside it. Now we want these ImageViews always to take equal space. To acheive this, yo...
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How to grep and replace

I need to recursively search for a specified string within all files and subdirectories within a directory and replace this string with another string. ...