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Replace one substring for another string in shell script
...ntext would represent itself, not a newline. I don't have Bash handy right now to test, but you should be able to write something like, $STRING="${STRING/$'\n'/<br />}". (Though you probably want STRING// -- replace-all -- instead of just STRING/.)
– ruakh
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Can hash tables really be O(1)?
It seems to be common knowledge that hash tables can achieve O(1), but that has never made sense to me. Can someone please explain it? Here are two situations that come to mind:
...
How to check if a string contains a substring in Bash
...ash, and, of course Bash:
stringContain() { [ -z "${2##*$1*}" ]; }
Then now:
$ if stringContain 'o "M3' 'echo "My String"';then echo yes;else echo no;fi
no
$ if stringContain 'o "M' 'echo "My String"';then echo yes;else echo no;fi
yes
... Or if the submitted string could be empty, as pointed o...
Check if a temporary table exists and delete if it exists before creating a temporary table
...olumn later, it will give an error saying "invalid column". Please let me know what I am doing wrong.
15 Answers
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Making git diff --stat show full file path
...you do not receive the full path of the resource using these commands. For now I only see relative paths for deleted files. I don't know if this is only the case for these files.
– GCallie
Aug 21 '17 at 14:22
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Organizing a multiple-file Go project [closed]
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The structure suggested in that link in your question is a bit outdated, now with the release of Go 1. You no longer would need to place a pkg directory under src. The only 3 spec-related directories are the 3 in the root of your GOPATH: bin, pkg, src . Underneath src, you can simply place your p...
Undefined behavior and sequence points
...s answer is a bit long. So have patience while reading it. If you already know these things, reading them again won't make you crazy.
Pre-requisites : An elementary knowledge of C++ Standard
What are Sequence Points?
The Standard says
At certain specified points in the execution sequenc...
Change date of git tag (or GitHub Release based on it)
... the new tags with fixed dates back up to GitHub.
Go to GitHub, delete any now-draft releases, and re-create new releases from the new tags
In code:
# Fixing tag named '1.0.1'
git checkout 1.0.1 # Go to the associated commit
git tag -d 1.0.1 # Locally delete the tag
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Redirecting EC2 Elastic Load Balancer from HTTP to HTTPS
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AWS Application Load Balancers now support native HTTP to HTTPS redirect.
To enable this in the console, do the the following:
Go to your Load Balancer in EC2 and tab "Listeners"
Select "View/edit rules" on your HTTP listener
Delete all rules except for...
can you host a private repository for your organization to use with npm?
...tory in the clock blog.
EDIT (2017-02-26):
Not really new, but there are now paid plans to host private packages on NPM.
Over the years, NPM has become a factor for many non-Node.js companies, too, through the huge frontend ecosystem that's built upon NPM. If your company is already running Sonat...