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No generic implementation of OrderedDictionary?
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98
Implementing a generic OrderedDictionary isn't terribly difficult, but it's unnecessarily time ...
Hidden Features of MySQL
...LL |
| 5 | system user | | NULL | Connect | 98 | Waiting for master to send event | NULL |
| 6 | system user | | NULL | Connect | 5018 | Reading event from the relay log | NULL |
+-----+------+-----------+---------+---------+---...
Create an index on a huge MySQL production table without table locking
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kennytm
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answered Jan 10 '13 at 0:28
Dave DopsonDave Dopson
...
Context switches much slower in new linux kernels
..., 0x601ac0, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1
0.000125 futex(0x7f98ce4c0b88, FUTEX_WAKE_PRIVATE, 2147483647) = 0
0.000042 futex(0x601b00, FUTEX_WAKE_PRIVATE, 1) = 1
0.000038 futex(0x601b00, FUTEX_WAKE_PRIVATE, 1) = 1
0.000037 futex(0x601b00, FUTEX_WAKE_PRIVATE, 1) = 1
0.000030 futex(0x...
Python str vs unicode types
...(0xE2 0x89 0xA0)
???? → 11110000 10011111 10011000 10000010 (0xF0 0x9F 0x98 0x82)
The way UTF-8 encodes characters to bit strings is very well described here.
Unicode and Encodings
Looking at the above examples, it becomes clear how Unicode is useful.
For example, if I'm Latin-1 and I want to...
How to add texture to fill colors in ggplot2
...a$Points6 <- c(49, 56, 63, 71, 78)
Example.Data$Points7 <- c(84, 91, 98, 6, 12)
Finally I added geom_jitters to the ggplot above using the new columns for positioning and re-using 'Points' to vary the size of the 'bubbles':
+geom_jitter(data=Example.Data,aes(x=Bubbles, y=Points, size=Points...
Why do we need private subnet in VPC?
... data transfer charges for all data transferred via the NAT gateway) = $47.98
t2.nano instance configured as a NAT instance = $4.84/month ($0.0065 * 744 hours in a month) + $10 ($.10/GB standard AWS data transfer charges for all data transferred via the NAT instance) = $14.84
This of course change...
Why would you use an ivar?
...un", (cft * 10000000000.0) / kRuns);
Output:
1: 23.0 picoseconds/run
2: 98.4 picoseconds/run
This is 4.28 times slower and this was a non-atomic primitive int, pretty much the best case; most other cases are even worse (try an atomic NSString * property!). So if you can live with the fact that ...
Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
...mbers, compressed size: 13683 compression factor: 0.34
bucket[1] contains: 9885 numbers, compressed size: 13479 compression factor: 0.34
...
bucket[98] contains: 10026 numbers, compressed size: 13612 compression factor: 0.34
bucket[99] contains: 10058 numbers, compressed size: 13701 compression fact...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
...rammers would simply avoid using those names for their own purposes.
The 1989 ANSI C standard introduced rules restricting what symbols an implementation could legally predefine. A macro predefined by the compiler could only have a name starting with two underscores, or with an underscore followed ...