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Using CSS how to change only the 2nd column of a table
..... } selects all cells in other columns as well.
– j4v1
Jun 17 '15 at 20:35
1
...
Explicitly calling return in a function or not
...(x) return(vector(length=x,mode="numeric")))(x)
,repeats)) }
maxlen <- 1000
reps <- 10000
along <- seq(from=1,to=maxlen,by=5)
ret <- sapply(along,FUN=bench_ret2,repeats=reps)
nor <- sapply(along,FUN=bench_nor2,repeats=reps)
res <- data.frame(N=along,ELAPSED_RET=ret["elapsed",],ELA...
Find out if string ends with another string in C++
...know if it starts with something? In other words, you may end up searching 100mb long string to find the piece at the end and then ignoring that result because it's not at the beginning of the string.
– Pavel P
Jun 12 '19 at 16:03
...
马云：互联网时代已经过去20年，接下来30年才是关键 - 资讯 - 清泛网 - 专...
...机会是一种制衡。
今天香港的年轻人，你们所处的地理位置是最好，香港无论它的经济结构、金融的优势、知识的优势、全球化的视野绝不比大陆任何城市差，我很羡慕你们。我经常去香港，但是我想告诉大家，机会是你自己...
Typedef function pointer?
...{
int x;
int y;
} point;
//typedef an array
typedef point points[100];
points ps = {0}; // ps is an array of 100 point
// typedef a function
typedef distance (*distanceFun_p)(point,point) ; // TYPE_DEF distanceFun_p TO BE int (*distanceFun_p)(point,point)
// prototype a function
...
How do I check if a list is empty?
...plicitly:
if len(li) == 0:
print('the list is empty')
This way it's 100% clear that li is a sequence (list) and we want to test its size. My problem with if not li: ... is that it gives the false impression that li is a boolean variable.
...
Select first 4 rows of a data.frame in R
...
Use head:
dnow <- data.frame(x=rnorm(100), y=runif(100))
head(dnow,4) ## default is 6
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How to create a Custom Dialog box in android?
...
+100
Here I have created a simple Dialog, like:
custom_dialog.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:an...
CSS force image resize and keep aspect ratio
... and eventually arrived at this simple solution:
object-fit: cover;
width: 100%;
height: 250px;
You can adjust the width and height to fit your needs, and the object-fit property will do the cropping for you.
More information about the possible values for the object-fit property and a compatibility...
How can mixed data types (int, float, char, etc) be stored in an array?
... (r.tag == REAL) {
real x = r;
x.val = 25.0;
}
integer g = { INT, 100 };
record rg = g;
Up-casting and down-casting.
Edit: One gotcha to be aware of is if you're constructing one of these with C99 designated initializers. All member initializers should be through the same union member...