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How do I fix PyDev “Undefined variable from import” errors?
...nse error flag that Eclipse has suddenly decided to implement randomly for fun and profit(?)
– R Thiede
Jun 8 '12 at 8:48
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What is difference between instantiating an object using new vs. without
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123
The line:
Time t (12, 0, 0);
... allocates a variable of type Time in local scope, generall...
Regex, every non-alphanumeric character except white space or colon
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Try this:
[^a-zA-Z0-9 :]
JavaScript example:
"!@#$%* ABC def:123".replace(/[^a-zA-Z0-9 :]/g, ".")
See a online example:
http://jsfiddle.net/vhMy8/
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What is more efficient: Dictionary TryGetValue or ContainsKey+Item?
...tual entry location. The Item property actually has nearly identical code functionality as TryGetValue, except that it will throw an exception instead of returning false.
Using ContainsKey followed by the Item basically duplicates the lookup functionality, which is the bulk of the computation in t...
What are the differences between virtual memory and physical memory?
...l memory address. Imagine software had spat out an address of 45 with data 123, and OS had stored it in location 2012 and created an entry in the map, mapping 45 to 2012. If the software is now moved in memory, what used to be at location 2012 will no longer be at 2012, but in a new location, and OS...
How can I list all collections in the MongoDB shell?
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AdaTheDevAdaTheDev
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Android Studio - How to Change Android SDK Path
...atforms etc under C:\android-sdk)
5. Click OK to save changes
6. Have fun!
Following steps were for older versions(<1.0) of Android Studio
4. In the middle column Click on Android SDK (with Android icon) OR click + on the top if you don't see an entry with Android icon.
5. Change SDK Ho...
In Perl, how can I read an entire file into a string?
...ed at once. It's just not a scalable solution. You might also find it more fun to use the standard Tie::File module, or the DB_File module's $DB_RECNO bindings, which allow you to tie an array to a file so that accessing an element the array actually accesses the corresponding line in the file.
You...
Class 'DOMDocument' not found
...om in Configure Command, what should i do next?
– ws_123
Jan 18 '13 at 9:38
That depends on your system. Worst case yo...
How to display a confirmation dialog when clicking an link?
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Inline event handler
In the most simple way, you can use the confirm() function in an inline onclick handler.
<a href="delete.php?id=22" onclick="return confirm('Are you sure?')">Link</a>
Advanced event handling
But normally you would like to separate your HTML and Javascript, so...