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How to map with index in Ruby?
...in 1.8.7+), which mixes in Enumerable, so you can call map, select, reject etc. on it just like on an array, hash, range etc.
– sepp2k
Jan 15 '11 at 1:45
9
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How to highlight text using javascript
...t a great idea because this will attempt to highlight HTML tags/attributes/etc. For example, what would happen in the case of: <img src="fox.jpg" /> You would get invalid HTML that would look like: <img src="<span class='highlight'>fox</span>.jpg" /> Not good
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Calling C++ class methods via a function pointer
...ference for (think virtual functions). You also need to know the object in order to provide the this implicit parameter, of course.
Having said that you need them, now I'll say that you really need to avoid them. Seriously, member pointers are a pain. It is much more sane to look at object-oriented...
Pass correct “this” context to setTimeout callback?
...n, you'd have solved this problem for this case, for map(), for forEach(), etc., etc., using less code, fewer CPU cycles, and less memory. ***See: Misha Reyzlin's answer.
– HoldOffHunger
Oct 20 '17 at 17:06
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what is the difference between a portlet and a servlet?
...ds they differ in containers, APIs, life cycle, configuration, deployment, etc.
The main difference between portlet vs. servlet could be that while servlet always responds to single type of action - request, portlet (due to nature of its life cycle and stronger container bindings) has to respond t...
Using git repository as a database backend
... terms of normal ORMs, such as ActiveRecord, Hibernate, DataMapper, Tower, etc.
As much as I've searched for, there's zero existing free codebase for doing that approach to git from popular frameworks.
There is at least one service that somehow manages to do that efficiently — that is obviously gi...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
... this on a 32-bit int, just reverse the bits in each byte, and reverse the order of the bytes. That is:
unsigned int toReverse;
unsigned int reversed;
unsigned char inByte0 = (toReverse & 0xFF);
unsigned char inByte1 = (toReverse & 0xFF00) >> 8;
unsigned char inByte2 = (toReverse &am...
How do you use the ellipsis slicing syntax in Python?
... a = arange(16).reshape(2,2,2,2)
Now, you have a 4-dimensional matrix of order 2x2x2x2. To select all first elements in the 4th dimension, you can use the ellipsis notation
>>> a[..., 0].flatten()
array([ 0, 2, 4, 6, 8, 10, 12, 14])
which is equivalent to
>>> a[:,:,:,0].f...
SQL Server - stop or break execution of a SQL script
...e multiple blocks within Begin..End? Meaning STATEMENT; GO; STATEMENT; GO; etc etc? I'm getting errors and I guess that might be the reason.
– Joel Peltonen
May 6 '14 at 12:48
3
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Loading and parsing a JSON file with multiple JSON objects
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