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What is an undefined reference/unresolved external symbol error and how do I fix it?
...libraries or object files directly to see what the problem might be (for example, a calling convention mismatch). Also, I'm not sure what version of MSVC produced the errors here, but newer versions include the name (both mangled and unmangled) of the function referring to the unresolved external sy...
Many-to-many relationship with the same model in rails?
...eign_key => "post_b_id")
end
And that should simply work! Here's an example irb session run through script/console:
>> a = Post.create :name => 'First post!'
=> #<Post id: 1, name: "First post!">
>> b = Post.create :name => 'Second post?'
=> #<Post id: 2, name:...
Hidden Features of JavaScript? [closed]
...ert it to a real array if you want: "var argArray = Array.prototype.slice.call(arguments);" )
– Jacob Mattison
Jan 26 '09 at 21:37
51
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MySql Table Insert if not exist otherwise update
...safe. (Bug #11765650, Bug #58637) Bug 58637 description bugs.mysql.com/bug.php?id=58637
– broadband
Sep 2 '14 at 13:28
...
jQuery Mobile: document ready vs. page events
...visit a page it is better to use pagebeforeshow event.
Here's a working example: http://jsfiddle.net/Gajotres/Q3Usv/ to demonstrate this problem.
Few more notes on this question. No matter if you are using 1 html multiple pages or multiple HTML files paradigm it is advised to separate all of your ...
Checking for a dirty index or untracked files with Git
..._dirty {
[[ $(git diff --shortstat 2> /dev/null | tail -n1) != "" ]] && echo "*"
}
For untracked files (Notice the --porcelain flag to git status which gives you nice parse-able output):
# Returns the number of untracked files
function evil_git_num_untracked_files {
expr `git statu...
How do I auto-submit an upload form when a file is selected?
...
JavaScript with onchange event:
<form action="upload.php" method="post" enctype="multipart/form-data">
<input type="file" name="filename" onchange="javascript:this.form.submit();">
</form>
jQuery
.change() and .submit():
$('#fileInput').change(...
Open an IO stream from a local file or url
...er languages that can take a string that contains either a path to a local file or a url and open it as a readable IO stream.
...
The developers of this app have not set up this app properly for Facebook Login?
... the top bar.
Select the respective app from the drop down.
Go to 'Status & Review' from the table in the left side of the page.
Do you want to make this app and all its live features available to the general public? - Select switch to set YES/NO value.
Update:
The YES/NO button will be disab...
Remove the last character from a string [duplicate]
...the rest of the unaltered string is concatenated.
– CPHPython
Aug 9 '18 at 10:03
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