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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
...
Yeah, I believe SQL Server's equivalent is called MERGE. In general, the concept is often referred to as "UPSERT".
– chaos
Aug 2 '09 at 13:40
3
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How do I add a simple onClick event handler to a canvas element?
... attaches a click event to the canvas element, and then pushes one shape (called an element in my code) to an elements array. You could add as many as you wish here.
The purpose of creating an array of objects is so we can query their properties later. After all the elements have been pushed onto t...
Make page to tell browser not to cache/preserve input values
...sers. Another alternative is to use Javascript/jQuery to explicitly untick all checkboxes on page load.
– DisgruntledGoat
Apr 28 '10 at 10:28
1
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How do I find the number of arguments passed to a Bash script?
...ash
echo "The number of arguments is: $#"
a=${@}
echo "The total length of all arguments is: ${#a}: "
count=0
for var in "$@"
do
echo "The length of argument '$var' is: ${#var}"
(( count++ ))
(( accum += ${#var} ))
done
echo "The counted number of arguments is: $count"
echo "The accumula...
How to undo a git merge with conflicts
...nges from before the merge, although it cannot always do so reliably. Generally you shouldn't merge with uncommitted changes anyway.
Prior to version 1.7.4:
git reset --merge
This is older syntax but does the same as the above.
Prior to version 1.6.2:
git reset --hard
which removes all uncom...
Add a new column to existing table in a migration
... });
}
Then you can run your migrations:
php artisan migrate
This is all well covered in the documentation for both Laravel 3:
Schema Builder
Migrations
And for Laravel 4 / Laravel 5:
Schema Builder
Migrations
Edit:
use $table->integer('paid')->after('whichever_column'); to add ...
The following sections have been defined but have not been rendered for the layout page “~/Views/Sha
... _Layout.cshtml has something like this:
@RenderSection("scripts")
Then all Views that use that Layout must include a @section with the same name (even if the contents of the section are empty):
@{
ViewBag.Title = "Title";
Layout = "~/Views/Shared/_Layout.cshtml";
}
@section scripts{
...
Border around tr element doesn't show?
...llapse: collapse;
}
JSFiddle.
The reason why it behaves this way is actually described pretty well in the specification:
There are two distinct models for setting borders on table cells in
CSS. One is most suitable for so-called separated borders around
individual cells, the other is suit...
Reset other branch to current without a checkout
...ws you describe are not equivalent: when you perform reset --hard you lose all the changes in the working tree (you might want to make it reset --soft).
What you need is
git update-ref refs/heads/OtherBranch refs/heads/CurrentBranch
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Variable is accessed within inner class. Needs to be declared final
...anges made in the inner class did not persist in the enclosing scope. Basically, what happens in the inner class stays in the inner class.
I wrote a more in-depth explanation here. It also explains why instance and global variables do not need to be declared final.
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