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Include headers when using SELECT INTO OUTFILE?
... characters to avoid a truncated result
set session group_concat_max_len = 1000000;
select GROUP_CONCAT(CONCAT("'",COLUMN_NAME,"'"))
from INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'my_table'
AND TABLE_SCHEMA = 'my_schema'
order BY ORDINAL_POSITION
Now you can copy & paste the resulting ro...
Set 4 Space Indent in Emacs in Text Mode
...ote (4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92 96 100 104 108 112 116 120))))
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Joins are for lazy people?
...s A and B, where each row in A is associated with 20 rows in B, B has only 100 rows, and we want to fetch the first 1000 rows from A with associated rows from B. Joining in the database will result in 20 * 1000 tuples sent across the network. If the join is done in the app server (first fetching the...
How to check if a number is between two values?
...e
logically JavaScript will read your if condition like
windowSize > -100
because it calculates 500-600 to -100
You should use && for strict checking both cases for example which will look like this
if( windowSize > 500 && windowSize < 600 ){
// Then doo something
...
Difference between outline and border
... rounded corners";
position: absolute;
bottom: 0;
transform: translateY(100%);
}
.outline:after {
content: "outline doesn't support rounded corners";
position: absolute;
bottom: 0;
transform: translateY(100%);
}
<div class="border"></div>
<div class="outline"></d...
How to change facet labels?
...H% 50", `60` = "RH% 60",`70` = "RH% 70", `80` = "RH% 80",`90` = "RH% 90", `100` = "RH% 100")) #Necesarry to put RH% into the facet labels
2) We add into the GGplot:
ggplot(dataframe, aes(x=Temperature.C,y=fit))+geom_line()+ facet_wrap(~Humidity.RH., nrow=2,labeller=hum.names)
...
pull out p-values and r-squared from a linear regression
... solution utilising the broom package.
Sample code
x = cumsum(c(0, runif(100, -1, +1)))
y = cumsum(c(0, runif(100, -1, +1)))
fit = lm(y ~ x)
require(broom)
glance(fit)
Results
>> glance(fit)
r.squared adj.r.squared sigma statistic p.value df logLik AIC BIC deviance df...
Why does C++ rand() seem to generate only numbers of the same order of magnitude?
... you keep doing this for n, you can see that from 1 to 10^n, 99.9999...% = 100% of the numbers are from 10^0 to 10^n with this method.
Now about code, if you want a random number with random orders of magnitude, from 0 to 10^n, you could do:
Generate a small random number from 0 to n
If you know ...
Uploading Files in ASP.net without using the FileUpload server control
...engthComputable) {
var s = parseInt((e.loaded / e.total) * 100);
$("#progress" + currFile).text(s + "%");
$("#progbarWidth" + currFile).width(s + "%");
if (s == 100) {
triggerNextFileUpload();
}
...
random.seed(): What does it do?
...andom
random.seed(10)
for i in range(5):
print(random.randint(1, 100))
Execute the above program multiple times...
1st attempt: prints 5 random integers in the range of 1 - 100
2nd attempt: prints same 5 random numbers appeared in the above execution.
3rd attempt: same
.....So on
Ex...