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How to call a JavaScript function from PHP?
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As far as PHP is concerned (or really, a web server in general), an HTML page is nothing more complicated than a big string.
All the fancy work you can do with language like PHP - reading from databases and web services and all that - the ultimate end ...
Cleanest way to toggle a boolean variable in Java?
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@user515655 - The language defines a -- operator (actually, two of them, along with two ++ operators), but doesn't define a !! operator. If you want -(-(integer)) you can use white space between the two - characters. But !! parses as two ! operators regardless of white s...
How do I copy a version of a single file from one git branch to another?
...u want the file to end up:
git checkout otherbranch myfile.txt
General formulas:
git checkout <commit_hash> <relative_path_to_file_or_dir>
git checkout <remote_name>/<branch_name> <file_or_dir>
Some notes (from comments):
Using the commit hash you can pull files...
Android JSONObject - How can I loop through a flat JSON object to get each key and value
How I can get each item's key and value without knowing the key nor value beforehand?
5 Answers
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Heroku “psql: FATAL: remaining connection slots are reserved for non-replication superuser connectio
...ng an app on Heroku with a Postgresql backend. Periodically, I get this error message when trying to access the database, both from the CLI and from loading a page on the server:
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How to handle exceptions in a list comprehensions?
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There is no built-in expression in Python that lets you ignore an exception (or return alternate values &c in case of exceptions), so it's impossible, literally speaking, to "handle exceptions in a list comprehension" because a list comprehension is an expression containing other...
No serializer found for class org.hibernate.proxy.pojo.javassist.Javassist?
I am working on SpringMVC , Hibernate & JSON but I am getting this error.
19 Answers
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When should you use a class vs a struct in C++?
...wered Sep 10 '08 at 16:35
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What does value & 0xff do in Java?
...nt literal (00 00 00 ff).
The & is applied to yield the desired value for result.
(The point is that conversion to int happens before the & operator is applied.)
1Well, not quite. The & operator works on long values as well, if either operand is a long. But not on byte. See the Java L...
Difference between single and double quotes in Bash
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Single quotes won't interpolate anything, but double quotes will. For example: variables, backticks, certain \ escapes, etc.
Example:
$ echo "$(echo "upg")"
upg
$ echo '$(echo "upg")'
$(echo "upg")
The Bash manual has this to say:
3.1.2.2 Single Quotes
Enclosing characters in s...