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Why is require_once so bad to use?
...d, so we are already reaching a point thats noticeable to a human. If that script is called frequently it will cause performance issues on the system. Optimization is not a joke and the whole world is not turning around your PC. There are ten thousands of CPUs in use.
– John
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Difference between and
...n't do anything by default. They're generally used in conjunction with JavaScript as part of an AJAX application.
<input type="submit"> buttons will submit the form they are in when the user clicks on them, unless you specify otherwise with JavaScript.
...
The difference between sys.stdout.write and print?
...sys.stdout.write() is preferable to
print
After finishing developing a script the other day, I uploaded it to a unix server. All my debug messages used print statements, and these do not appear on a server log.
This is a case where you may need sys.stdout.write instead.
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PDO Prepared Inserts multiple rows in single query
...to create the $data array has 28 cols and is about 80,000 lines. The final script took 41s to complete.
Using array_push() to create $insert_values instead of array_merge() resulted in a 100X speed up with execution time of 0.41s.
The problematic array_merge():
$insert_values = array();
foreach(...
Why is parenthesis in print voluntary in Python 2.7?
...SCII is default encoding for Python. But I have at the beginning of Python script #encoding=utf-8, linux env LANG=en_US.UTF-8. So repr encodes not using default ASCII, but utf-8 encoding.
– Karlo Smid
Aug 18 '12 at 9:22
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In a Bash script, how can I exit the entire script if a certain condition occurs?
I'm writing a script in Bash to test some code. However, it seems silly to run the tests if compiling the code fails in the first place, in which case I'll just abort the tests.
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Application_Error not firing when customerrors = “On”
...aspx. These pages were very simple but they had one piece of magic...
<script type="text/C#" runat="server">
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
Response.StatusCode = (int) System.Net.HttpStatusCode.InternalServerError;
}
</script>
...
How to gracefully handle the SIGKILL signal in Java
...er watcher program watch for your main program to go away or use a wrapper script. You could do with this with a shell script that polled the ps command looking for your program in the list and act accordingly when it disappeared.
#!/usr/bin/env bash
java TestShutdownHook
wait
# notify your other ...
Installing older version of R package
...
@Thomas I am going to try to run my script on Amazon EC2 to avoid the obvious local problems on my machine (library paths, versions of R vs versions of packages, compiling issues etc.)
– Antoine
Jul 16 '15 at 10:35
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background function in Python
I've got a Python script that sometimes displays images to the user. The images can, at times, be quite large, and they are reused often. Displaying them is not critical, but displaying the message associated with them is. I've got a function that downloads the image needed and saves it locally. Rig...