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How to implement “select all” check box in HTML?
...each...in construct doesn't seem to work, at least in this case, in Safari 5 or Chrome 5. This code should work in all browsers:
function toggle(source) {
checkboxes = document.getElementsByName('foo');
for(var i=0, n=checkboxes.length;i<n;i++) {
checkboxes[i].checked = source.checked;
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How to test if list element exists?
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156
This is actually a bit trickier than you'd think. Since a list can actually (with some effort) ...
Trigger change event of dropdown
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answered May 24 '09 at 15:18
Christophe EbléChristophe Eblé
7,47322 gold badges2929 silver badges2929 bronze badges
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The type or namespace name could not be found [duplicate]
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answered Jan 21 '11 at 23:52
AndersAnders
14.4k44 gold badges2828 silver badges4141 bronze badges
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Virtualbox “port forward” from Guest to Host [closed]
...nd out the ip address:
ifconfig
example of result (ip address is 10.0.2.15):
eth0 Link encap:Ethernet HWaddr 08:00:27:AE:36:99
inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0
Go to Vbox instance window -> Menu -> Network adapters:
adapter should be NAT
click on "p...
When to use MyISAM and InnoDB? [duplicate]
... read operations. If your read to write(insert|update) ratio is less than 15% its better to use MyISAM.
2 Answers
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Convert string to a variable name
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assign is what you are looking for.
assign("x", 5)
x
[1] 5
but buyer beware.
See R FAQ 7.21
http://cran.r-project.org/doc/FAQ/R-FAQ.html#How-can-I-turn-a-string-into-a-variable_003f
share
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How to center buttons in Twitter Bootstrap 3?
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578
Wrap the Button in div with "text-center" class.
Just change this:
<!-- wrong -->
<...
PHP best way to MD5 multi-dimensional array?
What is the best way to generate an MD5 (or any other hash) of a multi-dimensional array?
13 Answers
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Select Last Row in the Table
...ble('files')->orderBy('upload_time', 'desc')->first();
For Laravel 5.7 and onwards
return DB::table('files')->latest('upload_time')->first();
This will order the rows in the files table by upload time, descending order, and take the first one. This will be the latest uploaded file.
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