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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
...r cache thrashing, if I can coin a term.
Caches work by indexing with low order bits and tagging with high order bits.
Imaging that your cache has 4 words and your matrix is 4 x 4. When a column is accessed and the row is any power of two in length, then each column element in memory will map to t...
Repeat String - Javascript
...n that I've used everywhere--aligning item prices and totals in JavaScript order forms, data formatting and email / text message formatting and many other uses.
Original code for creating strings stringFill1()
function stringFill1(x, n) {
var s = '';
while (s.length < n) s += x;
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How to JSON serialize sets?
...Python set that contains objects with __hash__ and __eq__ methods in order to make certain no duplicates are included in the collection.
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What is the difference between class and instance methods?
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@selytch "age" would have to be defined as a property in order to use synthetize.
– micah94
Jun 28 '14 at 15:56
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How to install 2 Anacondas (Python 2 and 3) on Mac OS
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“Incorrect string value” when trying to insert UTF-8 into MySQL via JDBC?
...s affected (0.01 sec)
In short I had to reduce the size of that field in order to get the update to work.
Now when I run:
mysql> ALTER TABLE user CONVERT TO CHARACTER SET utf8mb4;
Query OK, 5 rows affected (0.01 sec)
Records: 5 Duplicates: 0 Warnings: 0
It all works
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'Operation is not valid due to the current state of the object' error during postback
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Difference between CR LF, LF and CR line break types?
... +1 It is by this simple understanding that I always remember in what order the combination comes. Even today we can still see this mechanical logic in any inktjet-printer (I love to understand since I hate to learn). My other memory-tricks are: "mac? Return to sender" and "NewLineFeed" (to re...
Android gradle: buildtoolsVersion vs compileSdkVersion
...an use a higher version of the build-tools than your compileSdkVersion, in order to pick up new/better compiler while not changing what you build your app against.
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Why are these constructs using pre and post-increment undefined behavior?
...ne the value to be stored.
and 6.5.16 Assignment operators, §4:
The order of evaluation of the operands is unspecified. If an attempt is made to modify
the result of an assignment operator or to access it after the next sequence point, the
behavior is undefined.
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