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What does threadsafe mean?
...eed to perform common actions - disk i/o, outputting results to the screen etc. - these parts of the code will need to be written in such a way that they can handle being called from multiple threads, often at the same time. This will involve things like:
Working on copies of data
Adding locks aro...
How to detect online/offline event cross-browser?
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The library actually works by fetching local favicon repeatedly under the hood. In my opinion, the library is too "big" and has too many features; the main trick is just fetching favicon repeatedly.
– Karel Bílek
Oct...
How to remove ASP.Net MVC Default HTTP Headers?
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Does it work against your content files/images/etc that aren't going through the code path?
– Mark Sowul
Oct 22 '15 at 15:46
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How to change owner of PostgreSql database?
...bjects with a new owner, including system resources (postgres0, postgres1, etc.)
First, connect to admin database and update DB ownership:
psql
postgres=# REASSIGN OWNED BY old_name TO new_name;
This is a global equivalent of ALTER DATABASE command provided in Frank's answer, but instead of up...
How do HttpOnly cookies work with AJAX requests?
...ink. All the normal request properties: user-agent, ip, session, cookies, etc. are passed to the server.
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Dynamic LINQ OrderBy on IEnumerable / IQueryable
...te that dynamic only applies to LINQ-to-Objects (expression-trees for ORMs etc can't really represent dynamic queries - MemberExpression doesn't support it). But here's a way to do it with LINQ-to-Objects. Note that the choice of Hashtable is due to favorable locking semantics:
using Microsoft.CSha...
Disable all table constraints in Oracle
... really want to disable all constraints (including NOT NULL, primary keys, etc). You should think about putting constraint_type in the WHERE clause.
BEGIN
FOR c IN
(SELECT c.owner, c.table_name, c.constraint_name
FROM user_constraints c, user_tables t
WHERE c.table_name = t.table_name
...
Subset of rows containing NA (missing) values in a chosen column of a data frame
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Could you explain why this works, what this does etc.?
– csilk
Nov 22 '17 at 0:19
new_DF<...
Execute a command line binary with Node.js
...s well documented in the documentation (v5.0.0). To execute a command and fetch its complete output as a buffer, use child_process.exec:
var exec = require('child_process').exec;
var cmd = 'prince -v builds/pdf/book.html -o builds/pdf/book.pdf';
exec(cmd, function(error, stdout, stderr) {
// com...
BasicHttpBinding vs WsHttpBinding vs WebHttpBinding
... or you could do something more advanced which leverages OAuth/STS tokens, etc.
– BrainSlugs83
Oct 21 '12 at 6:01
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