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How to iterate over a JavaScript object?
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For most objects, use for .. in :
for (let key in yourobject) {
console.log(key, yourobject[key]);
}
With ES6, if you need both keys and values simultaneously, do
for (let [key, value] of Object.entries(yourobject)) {
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How do I parse command line arguments in Java?
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Check these out:
http://commons.apache.org/cli/
http://www.martiansoftware.com/jsap/
http://picocli.info/
Or roll your own:
http://docs.oracle.com/javase/7/docs/api/java/util/Scanner.html
For instance, this is how you use commons-cli to parse 2 string argu...
Running unittest with typical test directory structure
The very common directory structure for even a simple Python module seems to be to separate the unit tests into their own test directory:
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Can I use mstest.exe without installing Visual Studio?
...sible to run mstest.exe without visual studio.
Download one of the Agents for Visual Studio ISO's below and install the Test Agent on the server:
Visual Studio 2017 (127MB disk space, less than that for download)
Visual Studio 2015 (128MB setup, 2GB disk space required)
Visual Studio 2012 (224MB)
V...
How to detect a textbox's content has changed
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input is html5 event that is not supported in all browsers. developer.mozilla.org/en-US/docs/Web/API/window.oninput
– commonpike
Jun 30 '13 at 20:01
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Unable to load config info from /usr/local/ssl/openssl.cnf on Windows
...allation versions (as seen in a previous edit of this post). Also, don't forget to add the openssl binary folder ${env:ProgramFiles}\OpenSSL to your Path.
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Check if a Windows service exists and delete in PowerShell
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You can use WMI or other tools for this since there is no Remove-Service cmdlet until Powershell 6.0 (See Remove-Service doc)
For example:
$service = Get-WmiObject -Class Win32_Service -Filter "Name='servicename'"
$service.delete()
Or wi...
Locking pattern for proper use of .NET MemoryCache
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This is my 2nd iteration of the code. Because MemoryCache is thread safe you don't need to lock on the initial read, you can just read and if the cache returns null then do the lock check to see if you need to create the string. It greatly simplifies the code.
const string...
Why would you ever implement finalize()?
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You could use it as a backstop for an object holding an external resource (socket, file, etc). Implement a close() method and document that it needs to be called.
Implement finalize() to do the close() processing if you detect it hasn't been done. Maybe w...
Capitalize the first letter of both words in a two word string
Let's say that I have a two word string and I want to capitalize
both of them.
12 Answers
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