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Should the folders in a solution match the namespace?
...olders equals namespaces
One type per file (class, struct, enum, delegate, etc.) makes it easy to find the right file
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map vs. hash_map in C++
...of O(N) when collisions are likely (bad hash fcn, loading factor too high, etc)
– KitsuneYMG
Feb 3 '10 at 6:25
A good ...
SQL Server dynamic PIVOT query?
...egate parameter will accept any standard sql aggregate 'AVG', 'SUM', 'MAX' etc. The code also defaults to MAX as an aggregate this is not necessary but the audience this was originally built for did not understand pivots and were typically using max as an aggregate.
Lets start with the code to crea...
Reference assignment operator in PHP, =&
...ere should not be a space between & and its variable/argument/function/etc.
When using the reference operator & before an argument, there MUST NOT be a space after it
TL;DR
When assigning a reference, always write the = with spaces on both sides and never write a space after &.
Bad: ...
Why functional languages? [closed]
...nctional languages in the same way that pure OO language (Smalltalk, Beta, etc.) have influenced mainstream programming but haven't ended up as the most widely-used notations.
Finally, I can't resist pointing out that your comments re FP are highly parallel to the remarks I heard from procedural pr...
What can MATLAB do that R cannot do? [closed]
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filter design,
fuzzy logic/fuzzy control,
partial differential equations,
etc.
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edited Nov 17 '09 at 9:34
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How to pass event as argument to an inline event handler in JavaScript?
... (And for anyone wondering: Yes, this does work on Chrome, Firefox, etc., even though some [Firefox, for instance] don't have a global event object. It's because the context in which the DOM0 handler is called has an event object, even if [on some browsers] it isn't a global.)
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How to center align the ActionBar title in Android?
....setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
getSupportActionBar().setCustomView(R.layout.abs_layout);
abs_layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:la...
Why does the C++ map type argument require an empty constructor when using []?
... contains some specific properties (default constructor, copy constructor, etc.).
Constructor without arguments is needed by the stl::map, because it's used, when operator[] is invoked with the key, which hasn't already been kept by the map. In this case the operator[] inserts the new entry consist...
datetime dtypes in pandas read_csv
...to read col1 and col2 as strings, which they most likely are ("2016-05-05" etc.) and after having read the string, the date_parser for each column will act upon that string and give back whatever that function returns.
Defining your own date parsing function:
The pandas.read_csv() function also ha...