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How do I analyze a .hprof file?
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If you want a fairly advanced tool to do some serious poking around, look at the Memory Analyzer project at Eclipse, contributed to them by SAP.
Some of what you can do is mind-blowingly good for finding memory leaks etc -- including running a form of limited SQ...
How to access outer class from an inner class?
...t, it is often recommended against using nested classes, since the nesting does not imply any particular relationship between the inner and outer classes.
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How do I check if a string contains a specific word?
...e simpler constructs like !strpos($a, 'are').
Edit:
Now with PHP 8 you can do this:
if (str_contains('How are you', 'are')) {
echo 'true';
}
RFC
str_contains
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MySQL pagination without double-querying?
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No, that's how many applications that want to paginate have to do it. It's reliable and bullet-proof, albeit it makes the query twice. But you can cache the count for a few seconds and that will help a lot.
The other way is to use SQL_CALC_FOUND_ROWS clause and then call SELECT FOUND_RO...
Batch script loop
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for /l is your friend:
for /l %x in (1, 1, 100) do echo %x
Starts at 1, steps by one, and finishes at 100.
Use two %s if it's in a batch file
for /l %%x in (1, 1, 100) do echo %%x
(which is one of the things I really really hate about windows scripting)
If you have ...
How do I completely uninstall Node.js, and reinstall from beginning (Mac OS X)
...odules. How and why this was created instead of in my /usr/local folder, I do not know.
Deleting these local references fixed the phantom v0.6.1-pre. If anyone has an explanation, I'll choose that as the correct answer.
EDIT:
You may need to do the additional instructions as well:
sudo rm -rf /u...
Rails 4 multiple image or file upload using carrierwave
How can I upload multiple images from a file selection window using Rails 4 and CarrierWave? I have a post_controller and post_attachments model. How can I do this?
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Using link_to with embedded HTML
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Two ways. Either:
<%= link_to user_path(@user) do %>
<i class="icon-ok icon-white"></i> Do it@
<% end %>
Or:
<%= link_to '<i class="icon-ok icon-white"></i> Do it@'.html_safe, user_path(@user) %>
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Skip first entry in for loop in python?
In python, How do I do something like:
13 Answers
13
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How do I use define_method to create class methods?
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I think in Ruby 1.9 you can do this:
class A
define_singleton_method :loudly do |message|
puts message.upcase
end
end
A.loudly "my message"
# >> MY MESSAGE
sha...