unhashable type: ‘dict’ Type Error [duplicate]
dic.values() return list of dict So, you can’t apply set on dict as dict is not hashable. Btw you can fix it by: For python > 3.x
How to view / open a calculator in mac OS X?
You can hit command + spacebar, which will bring up a search bar, and then type in calc, or calculator, and hit enter to open the calculator application. You can also find the calculator in Applications, or you can just use command + spacebar and type in the equation you wish to solve to the … Read more
Redirecting to URL in Flask
You have to return a redirect: See the documentation on flask docs. The default value for code is 302 so code=302 can be omitted or replaced by other redirect code (one in 301, 302, 303, 305, and 307).
Client on Node.js: Uncaught ReferenceError: require is not defined
This is because require() does not exist in the browser/client-side JavaScript. Now you’re going to have to make some choices about your client-side JavaScript script management. You have three options: Use the <script> tag. Use a CommonJS implementation. It has synchronous dependencies like Node.js Use an asynchronous module definition (AMD) implementation. CommonJS client side-implementations include (most of them require a build step before you … Read more
How to indent a few lines in Markdown markup?
There’s no way to do that in markdown’s native features. However markdown allows inline HTML, so writing will produce: This will appear with six space characters in front of it If you have control over CSS on the page, you could also use a tag and style it, either inline or with CSS rules. Either … Read more
What does cmd /C mean?
I can understand cmd but not cmd /c. I was trying to invoke a java program from the current for which I use Runtime.getRuntime().exec(“cmd /C java helloworld”); There arises my doubt.
require is not defined? Node.js
In the terminal, you are running the node application and it is running your script. That is a very different execution environment than directly running your script in the browser. While the Javascript language is largely the same (both V8 if you’re running the Chrome browser), the rest of the execution environment such as libraries … Read more
Error: No toolchains found in the NDK toolchains folder for ABI with prefix: llvm
I want to compile an open source android project (Netguard) using gradel (gradlew clean build) But I encountered this Error: I serached but didn’t find enything helping. Here is the main build.gradle: And here is the build.gradle of the app project: And I’m using gradle-2.9-all and android-ndk-r10e. I don’t know if I should mention anything … Read more
What is the difference between npm install and npm run build?
npm install installs dependencies into the node_modules/ directory, for the node project you’re working on. You can call install on another node.js project (module), to install it as a dependency for your project. npm run build does nothing unless you specify what “build” does in your package.json file. It lets you perform any necessary building/prep tasks for your project, prior to … Read more
How to grep for case insensitive string in a file?
You can use the -i flag which makes your pattern case insensitive: Also, there is no need for cat. grep takes a file with the syntax grep <pattern> <file>. I also used the -F flag to search for a fixed string to avoid escaping the ellipsis.