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How to write a bash script that takes optional input arguments?
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you need write to a regular variable to use the substitution
#!/bin/bash
NOW=$1
echo ${NOW:-$(date +"%Y-%m-%d")}
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Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
.... + ak2 = b2
...
a1k + a2k + ... + akk = bk
Using Newton's identities, knowing bi allows to compute
c1 = a1 + a2 + ... ak
c2 = a1a2 + a1a3 + ... + ak-1ak
...
ck = a1a2 ... ak
If you expand the polynomial (x-a1)...(x-ak) the coefficients will be exactly c1, ..., ck - see Viète's formulas. Si...
How to view the Folder and Files in GAC?
I want to view the folders and sub folders in GAC . Also want to know about adding and removing from GAC .
5 Answers
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Understanding $.proxy() in jQuery
...setTimeout($.proxy(function() {
$(this).addClass('aNewClass'); // Now "this" is again our element
}, this), 1000);
// ---^--------------and tell it that we want our DOM element to be the
// value of "this" in the function
});
So after we gave $.proxy() the f...
Importing CommonCrypto in a Swift framework
...rch paths defined at the project or xcconfig level.
That's it, you should now be able to import CommonCrypto
Update for Xcode 10
Xcode 10 now ships with a CommonCrypto module map making this workaround unnecessary. If you would like to support both Xcode 9 and 10 you can do a check in the Run Scr...
Markdown open a new window link [duplicate]
...m trying to edit a website which uses a modx cms, and it's using Markdown. Now I would like to open a new link into another window.
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You have already activated X, but your Gemfile requires Y
...is.
Basically what's happening is that you've updated rake to 0.9.2 which now conflicts with the version specified in your Gemfile. Previously the latest version of rake you had matched the version in your Gemfile, so you didn't get any warning when simply using rake.
Yehuda Katz (one of the origi...
What is the difference between “git init” and “git init --bare”?
...u don't get a directory where you can work. Everything in the directory is now what was contained in the .git folder in the above case.
Why You Would Use One vs. the Other
The need for git repos without a working directory is the fact that you can push branches to it and it doesn't manage what som...
How do I get the current absolute URL in Ruby on Rails?
...otocol}#{request.host_with_port}#{request.fullpath}", since request.url is now deprecated.
For Rails 2:
You can write request.url instead of request.request_uri. This combines the protocol (usually http://) with the host, and request_uri to give you the full address.
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How to modify a pull request on GitHub to change target branch to merge into?
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You can now:
https://github.com/blog/2224-change-the-base-branch-of-a-pull-request
"You can now change the base branch of an open pull request. After you’ve created a pull request, you can modify the base branch so that the change...