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Difference between Math.Floor() and Math.Truncate()
...divide trickery to achieve the same effect:
c = System.Math.Truncate (n * 100) / 100; // 3.14
d = System.Math.Ceiling (n * 100) / 100; // 3.15
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improv...
Force R to stop plotting abbreviated axis labels - e.g. 1e+00 in ggplot2
...g for this:
require(ggplot2)
df <- data.frame(x=seq(1, 1e9, length.out=100), y=sample(100))
# displays x-axis in scientific notation
p <- ggplot(data = df, aes(x=x, y=y)) + geom_line() + geom_point()
p
# displays as you require
require(scales)
p + scale_x_continuous(labels = comma)
...
How to find gaps in sequential numbering in mysql?
...sible) answer
Here's version that works on table of any size (not just on 100 rows):
SELECT (t1.id + 1) as gap_starts_at,
(SELECT MIN(t3.id) -1 FROM arrc_vouchers t3 WHERE t3.id > t1.id) as gap_ends_at
FROM arrc_vouchers t1
WHERE NOT EXISTS (SELECT t2.id FROM arrc_vouchers t2 WHERE t2.i...
Heroku free account limited?
...o requests. If each instance of your application can serve each request in 100ms, then you get 600 requests/minute with the free account.
Your application code and its assets (the slug) are limited to 300 MB in total. Your application also has access to the local filesystem, which can serve as an e...
Pandas: Setting no. of max rows
... IPython.display import display
with pd.option_context('display.max_rows', 100, 'display.max_columns', 10):
display(df) #need display to show the dataframe when using with in jupyter
#some pandas stuff
You can also reset an option back to its default value like this:
pd.reset_option('disp...
SQL WHERE ID IN (id1, id2, …, idn)
...izes like below:
Divide you list of Ids into chunks of fixed number, say 100
Chunk size should be decided based upon the memory size of your server
Suppose you have 10000 Ids, you will have 10000/100 = 100 chunks
Process one chunk at a time resulting in 100 database calls for select
Why should y...
Null coalescing in powershell
...ssignment, and ternary operators in Powershell.
Null Coalescing
$null ?? 100 # Result is 100
"Evaluated" ?? (Expensive-Operation "Not Evaluated") # Right side here is not evaluated
Null Conditional Assignment
$x = $null
$x ??= 100 # $x is now 100
$x ??= 200 # $x remains 100
Terna...
Make footer stick to bottom of page correctly [duplicate]
...ddle and SO snippet:
html {
position: relative;
min-height: 100%;
}
body {
margin: 0 0 100px;
/* bottom = footer height */
padding: 25px;
}
footer {
background-color: orange;
position: absolute;
left: 0;
bottom: 0;
height: 100px;
wi...
jQuery trigger file input
... positioning it outside the viewport by setting position:absolute and top:-100px; and voilà it works.
see http://jsfiddle.net/DSARd/1/
call it a hack.
Hope that works for you.
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Calculating frames per second in a game
...
100
You need a smoothed average, the easiest way is to take the current answer (the time to draw t...