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Best way to check if object exists in Entity Framework?

...h I also sorted and trimmed to keep its length manageable). Note that the raw data was a CSV file that contained many individual records that had to be parsed. The records in each consecutive file (which came at a rate of about 1 every 5 minutes) overlapped considerably, hence the high percentage ...
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Why do we have to normalize the input for an artificial neural network?

... example a number of records in the database). In such case feeding this raw value into your network will not work very well. You will teach your network on values from lower part of range, while the actual inputs will be from the higher part of this range (and quite possibly above range, that the...
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Custom CSS Scrollbar for Firefox

... scrollbar-color: light; } .scroll-color-colors { scrollbar-color: orange lightyellow; } <div class="scroll scroll-color-auto"> <p>auto</p><p>auto</p><p>auto</p><p>auto</p><p>auto</p><p>auto</p> </div> ...
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How would you compare jQuery objects?

... You need to compare the raw DOM elements, e.g.: if ($(this).parent().get(0) === $('body').get(0)) or if ($(this).parent()[0] === $('body')[0]) share | ...
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Can you attach Amazon EBS to multiple instances?

...fferent abstractions: EFS exposes the NFSv4 protocol, whereas EBS provides raw block IO access. Below you'll find my original explanation as to why it's not possible to safely mount a raw block device on multiple machines. ORIGINAL POST (2011): Even if you were able to get an EBS volume attac...
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Install NPM into home directory with distribution nodejs package (Ubuntu)

...rectory: Install Node.js with nvm (no sudo required): curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.2/install.sh | bash source ~/.bashrc nvm install 7 npm install -g npm # update npm Now you can install -g without sudo and everything goes into ~/.nvm/ Or install Node.js wit...
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WiX tricks and tips

... Id="INSTALLLOCATION"> <RegistrySearch Id="RegistrySearch" Type="raw" Root="HKLM" Win64="$(var.Win64)" Key="Software\Company\Product" Name="InstallLocation" /> </Property> Note: WiX guru Rob Mensching has posted an excellent blog entry which goes into more detail ...
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How to create NS_OPTIONS-style bitmask enumerations in Swift?

... written lower case by convention. struct MyOptions : OptionSet { let rawValue: Int static let firstOption = MyOptions(rawValue: 1 << 0) static let secondOption = MyOptions(rawValue: 1 << 1) static let thirdOption = MyOptions(rawValue: 1 << 2) } Instead of pro...
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Many-to-many relationship with the same model in rails?

... information. TL;DR # user.rb has_many :friendships, :foreign_key => "user_id", :dependent => :destroy has_many :occurances_as_friend, :class_name => "Friendship", :foreign_key => "friend_id", :dependent => :destroy .. # friendship.rb belongs_to :user belongs_to :friend, :class_n...
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How do I calculate a point on a circle’s circumference?

..., canvas.width, canvas.height ); ctx.beginPath(); ctx.strokeStyle = "orange"; ctx.arc( 100, 100, 80, 0, 2 * Math.PI); ctx.lineWidth = 3; ctx.stroke(); ctx.closePath(); ctx.beginPath(); ctx.fillStyle = "indigo"; ctx.arc( x, y, 6, 0, 2 * Math.PI); ctx.fill(); ctx.clo...