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Writing outputs to log file and console
...e and the log file - tee sends its output to both its own fd 1 (which here is the LOG_FILE) and the file you told it to write to (which here is fd 3, i.e. the console).
Example:
exec 3>&1 1>>${LOG_FILE} 2>&1
echo "This is stdout"
echo "This is stderr" 1>&2
echo "This is...
在 App Inventor 2 中使用图像 · App Inventor 2 中文网
...常见的陷阱！
Out of memory errors
An example of misusing large images
Use images that are “Just the right size”
Picking “just the right size”
Determining the size of the image on the screen
Details on fixed vs. responsive sizi...
Is #pragma once a safe include guard?
I've read that there is some compiler optimization when using #pragma once which can result in faster compilation. I recognize that is non-standard, and thus could pose a cross-platform compatibility issue.
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What does the “at” (@) symbol do in Python?
...Python docs or Google does not return relevant results when the @ symbol is included.
12 Answers
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Differences between MySQL and SQL Server [closed]
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One thing you have to watch out for is the fairly severe differences in the way SQL Server and MySQL implement the SQL syntax.
Here's a nice Comparison of Different SQL Implementations.
For example, take a look at the top-n section. In MySQL:
SELECT age
FRO...
Why Response.Redirect causes System.Threading.ThreadAbortException?
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The correct pattern is to call the Redirect overload with endResponse=false and make a call to tell the IIS pipeline that it should advance directly to the EndRequest stage once you return control:
Response.Redirect(url, false);
Context.Applica...
What is the javascript MIME type for the type attribute of a script tag? [duplicate]
What is the MIME type of javascript?
5 Answers
5
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System.Net.WebException HTTP status code
Is there an easy way to get the HTTP status code from a System.Net.WebException ?
6 Answers
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How can I check if my python object is a number? [duplicate]
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Test if your variable is an instance of numbers.Number:
>>> import numbers
>>> import decimal
>>> [isinstance(x, numbers.Number) for x in (0, 0.0, 0j, decimal.Decimal(0))]
[True, True, True, True]
This uses ABCs and w...
jQuery how to bind onclick event to dynamically added HTML element [duplicate]
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The first problem is that when you call append on a jQuery set with more than one element, a clone of the element to append is created for each and thus the attached event observer is lost.
An alternative way to do it would be to create the l...