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How to create multidimensional array
... 64). Crockford extends the JavaScript
array object with a function that sets the number of rows and columns
and sets each value to a value passed to the function. Here is his
definition:
Array.matrix = function(numrows, numcols, initial) {
var arr = [];
for (var i = 0; i < numrow...
How do I grant myself admin access to a local SQL Server instance?
...d SSMS with "Run as Administrator", added my NT account as a SQL login and set the server role to sysadmin. No problem.
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How to find out which processes are using swap space in Linux?
...t working anymore: It seems more recent versions of top no longer have 'O' set as the key for choosing the sort fields. When using the ? key you can see the actual program name and version, procps-ng being the latest version. This is a fork by Debian, Fedora and openSUSE: gitorious.org/procps . ...
Why use apparently meaningless do-while and if-else statements in macros?
In many C/C++ macros I'm seeing the code of the macro wrapped in what seems like a meaningless do while loop. Here are examples.
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How to round a number to n decimal places in Java
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Use setRoundingMode, set the RoundingMode explicitly to handle your issue with the half-even round, then use the format pattern for your required output.
Example:
DecimalFormat df = new DecimalFormat("#.####");
df.setRoundingMo...
What is “entropy and information gain”?
..., but that generalize poorly to other data not represented in the training set). Hence we usually stop when we get to a certain minimum number of instances in leaf nodes (and just predict the majority class), and/or perform some kind of pruning (see the Wikipedia links provided above to learn more)....
Export query result to .csv file in SQL Server 2008
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Confirmed @Breandán comment. The new settings won't apply to currently opened query window, must close them and re-run the query.
– Shinigamae
Jun 22 '15 at 8:14
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Is there any boolean type in Oracle databases?
...clear recommendation about what to use instead. See this thread on asktom. From recommending CHAR(1) 'Y'/'N' they switch to NUMBER(1) 0/1 when someone points out that 'Y'/'N' depends on the English language, while e.g. German programmers might use 'J'/'N' instead.
The worst thing is that they defen...
Is C++ context-free or context-sensitive?
... of the language. In particular, the grammar described here accepts a superset of valid C++ constructs. Disambiguation rules (6.8, 7.1, 10.2) must be applied to distinguish expressions from declarations. Further, access control, ambiguity, and type rules must be used to weed out syntactically valid ...
Using python map and other functional tools
This is quite n00bish, but I'm trying to learn/understand functional programming in python. The following code:
9 Answers
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