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How to check that a string is an int, but not a double, etc.?
PHP has an intval() function that will convert a string to an integer. However I want to check that the string is an integer beforehand, so that I can give a helpful error message to the user if it's wrong. PHP has is_int() , but that returns false for string like "2" .
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How to use the pass statement?
... some calling application would want to know about?).
try:
os.unlink(filename_larry)
except:
pass
Instead using at least except Error: or in this case preferably except OSError: is considered much better practice. A quick analysis of all python modules I have installed gave me that more ...
What's the difference between a proxy server and a reverse proxy server? [closed]
....
Examples:
Apple Trailers uses Akamai
Jquery.com hosts its JavaScript files using CloudFront CDN (sample).
etc.
2) The administrator of Z is worried about retaliation for content hosted on the server and does not want to expose the main server directly to the public.
a) Owners of Spam bran...
Declaring an unsigned int in Java
...s an unsigned integer. Static methods like compareUnsigned, divideUnsigned etc have been added to the Integer class to support the arithmetic operations for unsigned integers.
Note that int variables are still signed when declared but unsigned arithmetic is now possible by using those methods in t...
Is it possible to view RabbitMQ message contents directly from the command line?
...mq-dump-queue which allows dumping messages from a RabbitMQ queue to local files and requeuing the messages in their original order.
Example usage (to dump the first 50 messages of queue incoming_1):
rabbitmq-dump-queue -url="amqp://user:password@rabbitmq.example.com:5672/" -queue=incoming_1 -max-...
How do I install pip on macOS or OS X?
...recated. Please use get-pip.py instead.
First of all download the get-pip file
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
Now run this file to install pip
python get-pip.py
That should do it.
Another gif you said? Here ya go!
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
... In todays world, Data Execution Prevention doesn't even allow the CPU to fetch an instruction from the heap. This answer is outdated since XP SP2.
– MSalters
Apr 5 '17 at 8:27
2
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How to get the source directory of a Bash script from within the script itself?
..."${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )"
SOURCE="$(readlink "$SOURCE")"
[[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relat...
How to run Django's test database only in memory?
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I usually create a separate settings file for tests and use it in test command e.g.
python manage.py test --settings=mysite.test_settings myapp
It has two benefits:
You don't have to check for test or any such magic word in sys.argv, test_settings.py can si...
multiple packages in context:component-scan, spring config
How can I add multiple packages in spring-servlet.xml file in context:component-scan element?
8 Answers
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