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What are the disadvantages of using persistent connection in PDO

...any other PHP database interface that does persistent connections: if your script terminates unexpectedly in the middle of database operations, the next request that gets the left over connection will pick up where the dead script left off. The connection is held open at the process manager level (...
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How to add a progress bar to a shell script?

When scripting in bash or any other shell in *NIX, while running a command that will take more than a few seconds, a progress bar is needed. ...
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How to redirect the output of a PowerShell to a file during its execution

I have a PowerShell script for which I would like to redirect the output to a file. The problem is that I cannot change the way this script is called. So I cannot do: ...
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importing pyspark in python shell

...efault, thus an import pyspark will fail at command line or in an executed script. You have to either a. run pyspark through spark-submit as intended or b. add $SPARK_HOME/python to $PYTHONPATH. – kingledion Oct 10 '19 at 16:10 ...
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docker error: /var/run/docker.sock: no such file or directory

I am new to docker. I have a shell script that loads data into impala and I want a docker file that runs builds an image and run the container. I am on mac, installed boot2docker and have the DOCKER_HOST env set up. ...
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How to make a Bootstrap accordion collapse when clicking the header div?

...pcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet"/> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script> <div class="cont...
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git: fatal unable to auto-detect email address

...r Linux and had properly set my credentials through Git Bash, including in VS Code's terminal (where I was getting the error every time I tried to commit.) Apparently even tho VS is using Bash in the terminal, the UI git controls still run through Windows, where I had not set my credentials. Setti...
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What are the differences between SML and OCaml? [closed]

... You forgot equality (unrestricted and unsafe in OCaml vs safe but restricted equality types in SML), non-generalized type variables ('_a in OCaml), printf, interpretation of file names as module names in OCaml, far more currying in OCaml's stdlib. You wrote interface twice when ...
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How to do a GitHub pull request

...f the official "GitHub Help 'Using pull requests' page", see also "Forking vs. Branching in GitHub", "What is the difference between origin and upstream in GitHub") Couple tips on pull-requests: Assuming that you have first forked a repo, here is what you should do in that fork that you own: cre...
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Using cURL with a username and password?

... Technically correct, but incorrect if you're running it from an automated script that doesn't allow prompts. Would be curious about a solution to that problem. – Ligemer Mar 12 '14 at 23:29 ...