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What does the function then() mean in JavaScript?
... of promises.
If a handler returns a promise (makes another asynchronous request), then the next
handler (success or error) will be called only after that request is finished.
So the previous example code might translate to something like the following, using
promises and the $http service(in Angu...
Why does flowing off the end of a non-void function without returning a value not produce a compiler
...
C99 and C++ standards don't require functions to return a value. The missing return statement in a value-returning function will be defined (to return 0) only in the main function.
The rationale includes that checking if every code path returns a value i...
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 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
...
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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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...
How to rsync only a specific list of files?
... answered Jan 22 '16 at 11:01
Waqas KhanWaqas Khan
12911 silver badge33 bronze badges
...
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
...
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...