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Why are floating point numbers inaccurate?
... # double precision. all python floats are this
int_pack = 'Q'
float_pack = 'd'
exponent_bits = 11
mantissa_bits = 52
exponent_bias = 1023
else:
raise ValueError, 'bits argument must be 32 or 64'
bin_iter = iter(bin(struct.unpack(int_...
MySQL pagination without double-querying?
...ossible results before applying the limits. This can't be satisfied by an index because it actually fetches the data.
If you take the two queries approach, the first one only fetching COUNT(*) and not actually fetching and actual data, this can be satisfied much more quickly because it can usually...
json.net has key method?
...liamT.Mallard In C# 6, you can simplify that by using the null-conditional index operator: myJObject["level1property"]?["level2property"].
– svick
Jan 4 '17 at 19:45
...
What are the recommendations for html tag?
...some examples, let's assume we have these URLs:
A) http://www.example.com/index.html
B) http://www.example.com/
C) http://www.example.com/page.html
D) http://www.example.com/subdir/page.html
A+B both result in the very same file (index.html) be sent to the browser, C of course sends page.html, and...
Is there a way to measure how sorted a list is?
...r of inversions.
The number of inversions is the number of pairs (a,b) st index of a < b AND b << a. For these purposes << represents whatever ordering relation you choose for your particular sort.
A fully sorted list has no inversions, and a completely reversed list has the maximum...
I want to copy table contained from one database and insert onto another database table
...
This does not copy things such as index. It merely creates a table based on a set of tuples. You probably don't want to do this.
– BenMQ
Aug 26 '14 at 3:59
...
is there a css hack for safari only NOT chrome?
...s the code:
/* Safari 6.1-10.0 (not 10.1) */
@media screen and (min-color-index:0) and(-webkit-min-device-pixel-ratio:0)
{ @media {
.safari_only {
color:#0000FF;
background-color:#CCCCCC;
}
}}
For more 'version specific' Safari CSS, please continue to read below.
/* S...
How to iterate through all git branches using bash script
...C my_callback -c 1 < <( get_branches )
example:
my_callback () {
INDEX=${1}
BRANCH=${2}
echo "${INDEX} ${BRANCH}"
}
get_branches () {
git branch --all --format='%(refname:short)'
}
# mapfile -t -C my_callback -c 1 BRANCHES < <( get_branches ) # if you want the branches that wer...
Insertion Sort vs. Selection Sort
...
Both insertion sort and selection sort have an outer loop (over every index), and an inner loop (over a subset of indices). Each pass of the inner loop expands the sorted region by one element, at the expense of the unsorted region, until it runs out of unsorted elements.
The difference is in...
Is there a C++ gdb GUI for Linux? [closed]
...e tool becomes a nice experience.
The CDT tooling provides a decent C/C++ indexer that allows you to quickly find references to methods in your code base. It also provides a nice macro expansion tool and limited refactoring support.
With regards to support for debugging, CDT is able to do everyth...