How to get first char of a string?
Just MyString[0]. This uses the String.Chars indexer.
What is the difference between single and double square brackets in Bash?
Single [] are posix shell compliant condition tests. Double [[]] are an extension to the standard [] and are supported by bash and other shells (e.g. zsh, ksh). They support extra operations (as well as the standard posix operations). For example: || instead of -o and regex matching with =~. A fuller list of differences … Read more
Is there a way to share secrets across namespaces in Kubernetes?
Secret API objects reside in a namespace. They can only be referenced by pods in that same namespace. Basically, you will have to create the secret for every namespace. For more details, see this: Kubernetes Documentation / Concepts / Configuration / Secrets
Where is the body in a nodejs http.get response?
http.request docs contains example how to receive body of the response through handling data event: var options = { host: ‘www.google.com’, port: 80, path: ‘/upload’, method: ‘POST’ }; var req = http.request(options, function(res) { console.log(‘STATUS: ‘ + res.statusCode); console.log(‘HEADERS: ‘ + JSON.stringify(res.headers)); res.setEncoding(‘utf8’); res.on(‘data’, function (chunk) { console.log(‘BODY: ‘ + chunk); }); }); req.on(‘error’, function(e) … Read more
git is not respecting gitignore instruction to ignore .env files
Use git rm: If you have already added the files to be tracked, you need to remove them from tracking: git rm env.local –cached git rm env.staging –cached git commit -m “Stopped tracking env.local, and env.staging” Now you should be able to clone your branch without those files being tracked. Note: Keep in mind that … Read more
Prevent scrollbar from adding-up to the width of page on Chrome
DISCLAIMER: overlay has been deprecated. You can still use this if you absolutely have to, but try not to. This only works on WebKit browsers, but I like it a lot. Will behave like auto on other browsers. .yourContent{ overflow-y: overlay; } This will make the scrollbar appear only as an overlay, thus not affecting … Read more
Accessing up-to-date state from within a callback
For your scenario (where you cannot keep creating new callbacks and passing them to your 3rd party library), you can use useRef to keep a mutable object with the current state. Like so: function Card(title) { const [count, setCount] = React.useState(0) const [callbackSetup, setCallbackSetup] = React.useState(false) const stateRef = useRef(); // make stateRef always have … Read more
What is a SQL JOIN, and what are the different types? [duplicate]
What is SQL JOIN ? SQL JOIN is a method to retrieve data from two or more database tables. What are the different SQL JOINs ? There are a total of five JOINs. They are : 1. JOIN or INNER JOIN 2. OUTER JOIN 2.1 LEFT OUTER JOIN or LEFT JOIN 2.2 RIGHT OUTER JOIN … Read more
Method to add new or update existing item in C# Dictionary
Could there be any problem if i replace Method-1 by Method-2? No, just use map[key] = value. The two options are equivalent. Regarding Dictionary<> vs. Hashtable: When you start Reflector, you see that the indexer setters of both classes call this.Insert(key, value, add: false); and the add parameter is responsible for throwing an exception, when … Read more