Serialize A simple node utility to serialize execution of asynchronous functions. What does it do? Asynchrony in nodejs is great, except that it makes your code looks. Several days ago I noticed a blog post on the opsecx blog talking about exploiting a RCE (Remote Code Execution) bug in a nodejs module called node-serialize. The blog post explains pretty clearly what's wrong with the module in question but one thing that strikes me is how complex the exploitation. I'm going to study this 'fiber' thing to see if I want to use it. I don't like to add in libraries unless absolutely necessary since many of them eventually die of neglect and then the code based on them has a problem. I see this issue really as a hole in node.js that should be filled somewhat 'officially' by having node come up with a way to handle this or bless a solution to give it support so that it has a better chance of not dying of neglect. I'll revisit this when I'm done evaluating. Thanks for the heads up as I never heard of fiber before. – Sep 5 '13 at 13:49. Each command inside the serialize() function is guaranteed to finish executing before the next one starts. In your example, the CREATE TABLE will finish before the INSERT gets run. If you didn't use serialize() then the CREATE TABLE and INSERT statements would be run in parallel. They would start so quickly one after the other that the INSERT may actually finish before the table has been created, giving you an error about trying to insert data into a table that doesn't exist. This is called a race condition, because every time you run your program you might get a different winner. If CREATE TABLE wins the race then the program will work fine. But if INSERT wins the race, the program will break with an error. Since you can't control who wins the race, serialize() will stop INSERT from even starting until CREATE TABLE has reached the end, ensuring you get the same outcome every time. In your second example with only one statement then serialize() is still required. This is because run() starts the SQL query but returns immediately, leaving the query to run in the background. Since your very next command is one to close() the database, you'll cut it off while the query is still running. Jadi cara 1: Memasang aplikasi Remote PPT ODP di HP dan di PC. Ini Link download-nya: Berhubung file ini berekstensi.jar maka laptop kamu harus terinstal java terlebih dahulu agar bisa menjalankannya. Remote control tv wall mount. Aplikasi desktop itulah yang akan digunakan untuk menjalin koneksi antara HP dengan PC. Sebelumnya, Hp Android itu perlu kita set agar menjadi portable Wi-Fi hotspot sehingga keberadaan HP terbaca oleh PC. Koneksi yang dilakukan adalah via Wi-fi. Php Serialize ArraySince serialize() doesn't return until the last of its internal queries has completed, using it will hold off the close() until the query has completed. If you were using a different type of query (say in response to a user clicking a button on a web page, where the database is left open between calls) then you probably wouldn't need serialize(). It just depends whether the code that follows each query requires that the queries before it have completed or not. When deciding whether to use serialize() or not, it can be helpful to think of any non-serialized queries as if they are commented out, and then see if the code would still work. In your first example above, removing the CREATE TABLE command would break the following INSERT statement (because then there'd be no table to insert into), therefore these need to be serialised. But if you had two CREATE TABLE commands then removing one would not affect the other, so those two commands would not have to be serialized. (This tip doesn't apply to close() however - the rule of thumb there is to only call close() once everything has finished running.). Can i install mac os x on my windows machine. Aug 18, 2016 Guide To Install Yosemite on HP Laptops with Clover UEFI. Discussion in 'HP ProBook - Yosemite' started by nguyenmac, Oct 16. - Easier OS X install/Upgrade with native methods. HP ProBook 4540s OS X 10.11 BIOS F.60 A CPU: Intel Core i3-3110M / Intel HM76 Graphics.
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