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Two single-column indexes vs one two-column index in MySQL?
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If you have two single column indexes, only one of them will be used in your example.
If you have an index with two columns, the query might be faster (you should measure). A two column index can also be used as a single col...
SQL “select where not in subquery” returns no results
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Update:
These articles in my blog describe the differences between the methods in more detail:
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: SQL Server
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: PostgreSQL
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: Oracle
NOT IN...
ASP.NET: Session.SessionID changes between requests
...D is generated for each page request until the session object is accessed. If your application requires a static session ID for the entire session, you can either implement the Session_Start method in the application's Global.asax file and store data in the Session object to fix the session ID, or y...
When should I use git pull --rebase?
...efault and others who insist never to use it. I believe I understand the difference between merging and rebasing, but I'm trying to put this in the context of git pull . Is it just about not wanting to see lots of merge commit messages, or are there other issues?
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Are Java static initializers thread safe?
...ava static initializers are thread safe (use your first option).
However, if you want to ensure that the code is executed exactly once you need to make sure that the class is only loaded by a single class-loader. Static initialization is performed once per class-loader.
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Git error: “Host Key Verification Failed” when connecting to remote repository
...er the host key associated with a particular address and refuse to connect if a host key appears to change. This prevents man in the middle attacks.
The host key for domain.com has changed. If this does not seem fishy to you, remove the old key from your local cache by editing ${HOME}/.ssh/known_ho...
No Activity found to handle Intent : android.intent.action.VIEW
...ew Intent(Intent.ACTION_VIEW, uri);
throws an ActivityNotFoundException. If you prepend "http://", problem solved.
Uri uri = Uri.parse("http://www.google.com");
May not help OP, but I ended up here searching for the same exception and maybe it helps others.
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Populate data table from data reader
...ng in C# (MS VS2008) and have a question more about proper design than specific code.
5 Answers
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Download a file from NodeJS Server using Express
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Update
Express has a helper for this to make life easier.
app.get('/download', function(req, res){
const file = `${__dirname}/upload-folder/dramaticpenguin.MOV`;
res.download(file); // Set disposition and send it.
});
Old Answer
As far as your browser is concerne...
How to join two JavaScript Objects, without using JQUERY [duplicate]
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There are couple of different solutions to achieve this:
1 - Native javascript for-in loop:
const result = {};
let key;
for (key in obj1) {
if(obj1.hasOwnProperty(key)){
result[key] = obj1[key];
}
}
for (key in obj2) {
if(obj2.has...