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windows - What is the proper way to test if a parameter is empty in a batch file?

I need to test if a variable is set or not. I've tried several techniques but they seem to fail whenever %1 ... it's purpose is but nevertheless, I changed it. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Interactive large plot with ~20 million sample points and gigabytes of data

I have got a problem (with my RAM) here: it's not able to hold the data I want to plot. I do have ... plt.swap_on_disk() could cache the stuff on my SSD ;) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - orderBy multiple fields in Angular

How to sort by using multiple fields at same time in angular? fist by group and then by sub-group for Example $scope. ... | orderBy:'group' | orderBy:'sub'" /> Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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247 views

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javascript - App.settings - the Angular way?

I want to add an App Settings section into my App where It will contain some consts and pre defined values. ... to do it with InjectionToken , the Angular way. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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.net 3.5 - How to bind inverse boolean properties in WPF?

What I have is an object that has an IsReadOnly property. If this property is true, I would like to set the ... </Style.Triggers> </Style> </Button.Style> Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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unix - Replace comma with newline in sed on MacOS?

I have a file of strings that are comma separated. I'm trying to replace the commas with a new line. I've tried ... but it is not working. What am I missing? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - Uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)

When I want to create a Ruby on Rails project, I get the message below. /usr/lib/ruby/gems/1.8/gems/activesupport-2 ... What has gone wrong? How do I to fix it? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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css - Styling Google Maps InfoWindow

I've been attempting to style my Google Maps InfoWindow, but the documentation is very limited on this topic. How do you style an InfoWindow? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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rails + MySQL on OSX: Library not loaded: libmysqlclient.18.dylib

I'm just starting out with Ruby (and rails). I did the setup according to http://ruby.railstutorial.org/ruby-on- ... best way to tell Rails how to locate it? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Disable hover effects on mobile browsers

I'm writing a Web site that's meant to be used from both desktops and tablets. When it's being ... events will also fire mouseenter, mousemove and mouseleave. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - How to store a list in a column of a database table

So, per Mehrdad's answer to a related question, I get it that a "proper" database table column doesn't ... values occasionally or add more values to the plot. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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caching - What is causing "Unable to allocate memory for pool" in PHP?

I've occasionally run up against a server's memory allocation limit, particularly with a bloated application like Wordpress, ... the next day I hit this error. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Direct way of computing clockwise angle between 2 vectors

I want to find out the clockwise angle between 2 vectors(2D, 3D). The clasic way with the dot product ... you know a direct way of computing clockwise angle? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dynamic - Displaying emoticons in Android

My IM app has to support emoticons. They are GIFs and have textual representations, which are used in the input ... Is there an easier and more logical way? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How do I loop through a date range?

I'm not even sure how to do this without using some horrible for loop/counter type solution. Here's the problem: ... it seems like there could be a better way? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Making Distinctions Between Different Kinds of JSF Managed-Beans

I recently read this article from Neil Griffin Making Distinctions Between Different Kinds of JSF Managed-Beans and ... regard to the seperation of concerns? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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email - python: how to send mail with TO, CC and BCC?

I need for testing purposes to populate few hundred email boxes with various messages, and was going to use ... spam anyone outside of my testing environment.) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How can I escape white space in a bash loop list?

I have a bash shell script that loops through all child directories (but not files) of a certain directory. ... the following output: Cherry Hill New York City Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Hibernate - A collection with cascade=”all-delete-orphan” was no longer referenced by the owning entity instance

I'm having the following issue when trying to update my entity: "A collection with cascade= all-delete-orphan was ... any ideas, please let me know. Thanks! Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Android Notification Sound

I've used the newer NotificationCompat builder and I can't get the notification to make a sound. It will vibrate ... ); manager.notify(1, builder.build()); Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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219 views

1 answer

c# - How can a Metro app in Windows 8 communicate with a backend desktop app on the same machine?

In a situation where you have the UI frontend built using the new Metro style of apps for windows 8, and would like it ... the desktop (i.e. a non-metro app). Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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354 views

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iphone - iOS - Get CPU usage from application

Does anyone know how to obtain CPU usage for an application? It's definitely possible, because there are ... Activity Monitor Touch) which can show it. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Why escape_javascript before rendering a partial?

I'm looking at this Railscast episode and wondering why the call to escape_javascript is needed here: $("#reviews"). ... But that doesn't mean much to me. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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640 views

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reactjs - How can I persist redux state tree on refresh?

The first principle of Redux documentation is: The state of your whole application is stored in an object tree ... how developers keep their state tree! :) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How do I make a div element editable (like a textarea when I click it)?

This is my code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose. ... "utf-8"> </script> </body> </html> Thanks Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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224 views

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r faq - What's the biggest R-gotcha you've run across?

Is there a certain R-gotcha that had you really surprised one day? I think we'd all gain from sharing these. Here's ... 1]. Learned this in the early days of R. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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267 views

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python - How to concatenate two layers in keras?

I have an example of a neural network with two layers. The first layer takes two arguments and has one ... =ada_grad, loss=_loss_tensor, metrics=['accuracy']) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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175 views

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.net - What's the difference between ContentControl and ContentPresenter?

I'm not sure when I should use ContentPresenter instead of ContentControl (and vice-versa). At the moment, I ... ContentPresenter be a better choice? and why? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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