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What is the difference between HTTP and REST?
...between REST and SOAP, I got the impression that REST is just another word for HTTP. Can someone explain what functionality REST adds to HTTP?
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How to iterate over associative arrays in Bash
...d using ${array[@]}.
You can iterate over the key/value pairs like this:
for i in "${!array[@]}"
do
echo "key : $i"
echo "value: ${array[$i]}"
done
Note the use of quotes around the variable in the for statement (plus the use of @ instead of *). This is necessary in case any keys include sp...
How to add custom validation to an AngularJS form?
I have a form with input fields and validation setup by adding the required attributes and such. But for some fields I need to do some extra validation. How would I "tap in" to the validation that FormController controls?
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Select second last element with css
...e :nth-child CSS3 selector is in fact more capable than you ever imagined!
For example, this will select the last 2 elements of #container:
#container :nth-last-child(-n+2) {}
But this is just the beginning of a beautiful friendship.
:nth-child Browser Support
#container :nth-last-child(-n+2)...
How create table only using tag and Css
...id #666666;
border-spacing: 5px; /* cellspacing:poor IE support for this */
}
.div-table-row {
display: table-row;
width: auto;
clear: both;
}
.div-table-col {
float: left; /* fix for buggy browsers */
display: table-column;
width: 200px;
background-color...
Rails: How can I set default values in ActiveRecord?
... but I believe that defining an after_initialize callback is the way to go for the following reasons:
default_scope will initialize values for new models, but then that will become the scope on which you find the model. If you just want to initialize some numbers to 0 then this is not what you wan...
How to prepend a string to a column value in MySQL?
I need a SQL update statement for updating a particular field of all the rows with a string "test" to be added in the front of the existing value.
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Delete commits from a branch in Git
...G DIRECTORY CHANGES. Be sure to stash any local changes you want to keep before running this command.
Assuming you are sitting on that commit, then this command will wack it...
git reset --hard HEAD~1
The HEAD~1 means the commit before head.
Or, you could look at the output of git log, find the...
Random record from MongoDB
...
Unfortunately skip() is rather inefficient since it has to scan that many documents. Also, there is a race condition if rows are removed between getting the count and running the query.
– mstearn
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What is “function*” in JavaScript?
...nerator function does not execute its body immediately; an iterator object for the function is returned instead. When the iterator's next() method is called, the generator function's body is executed until the first yield expression, which specifies the value to be returned from the iterator or, wit...