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git revert back to certain commit [duplicate]
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You can revert all your files under your working directory and index by typing following this command
git reset --hard <SHAsum of your commit>
You can also type
git reset --hard HEAD #your current head point
or
git reset --hard HEAD^ #your previous head point
Hope it help...
Does Python have a package/module management system?
... community to download and publish packages. Python has the Python Package Index, PyPI. https://pypi.python.org/pypi
Let's compare its pages with those of RubyGems and Npm (the Node package manager).
https://rubygems.org/gems/rails RubyGems page for the package rails
https://www.npmjs.org/pack...
What are the differences between Deferred, Promise and Future in JavaScript?
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In light of apparent dislike for how I've attempted to answer the OP's question. The literal answer is, a promise is something shared w/ other objects, while a deferred should be kept private. Primarily, a deferred (which generally extends Promise) can resolve itself, while a promise might not b...
What is the difference between save and export in Docker?
...operating system.
It will pack the layers and metadata of all the chain required to build the image. You can then load this "saved" images chain into another docker instance and create containers from these images.
export will fetch the whole container : like a snapshot of a regular VM. Saves the O...
How do I put hint in a asp:textbox
...ng resources. This way you may have localized hints. Let's say you have an index.aspx file, your App_LocalResources/index.aspx.resx file contains
<data name="WithHint.placeholder">
<value>hint</value>
</data>
and your control looks like
<asp:textbox id="txtWithHint...
How to get row from R data.frame
...anted
x[1,]==y
This page (from this useful site) has good information on indexing like this.
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How do I remove a big file wrongly committed in git [duplicate]
...do it using the git filter-branch command, like this :
git filter-branch --index-filter "git rm -rf --cached --ignore-unmatch path_to_file" HEAD
You can find more documentation here http://dalibornasevic.com/posts/2-permanently-remove-files-and-folders-from-a-git-repository
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Convert JS Object to form data
...me || '';
if (typeof data === 'object'){
$.each(data, function(index, value){
if (name == ''){
appendFormdata(FormData, value, index);
} else {
appendFormdata(FormData, value, name + '['+index+']');
}
})
} el...
What are the basic rules and idioms for operator overloading?
...swers according to votes, rather than the time they were given, here's an index of the answers in the order in which they make most sense:
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Validate uniqueness of multiple columns
...r, one should add a unique constraint to db table. You can set it with add_index helper for one (or multiple) field(s) by running the following migration:
class AddUniqueConstraints < ActiveRecord::Migration
def change
add_index :table_name, [:field1, ... , :fieldn], unique: true
end
end
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