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Create an array with random values
How can I create an array with 40 elements, with random values from 0 to 39 ?
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21 Answers
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Left-pad printf with spaces
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If you want the word "Hello" to print in a column that's 40 characters wide, with spaces padding the left, use the following.
char *ptr = "Hello";
printf("%40s\n", ptr);
That will give you 35 spaces, then the word "Hello". This is how you format stuff when you know how wide you...
How to initialize an array in Java?
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data[10] = {10,20,30,40,50,60,71,80,90,91};
The above is not correct (syntax error). It means you are assigning an array to data[10] which can hold just an element.
If you want to initialize an array, try using Array Initializer:
int[] data =...
Storing SHA1 hash values in MySQL
...ning. Because it uses just 4 bit per character and thus would need 160/4 = 40 characters. But if you use 8 bit per character, you would only need a 160/8 = 20 character long field.
So I recommend you to use BINARY(20) and the UNHEX function to convert the SHA1 value to binary.
I compared storage r...
How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
... -n DEV 1 3
Linux 2.6.18-194.el5 (localhost.localdomain) 10/27/2010
02:40:56 PM IFACE rxpck/s txpck/s rxbyt/s txbyt/s rxcmp/s txcmp/s rxmcst/s
02:40:57 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
02:40:57 PM eth0 10700.00 1705.05 15...
Padding characters in printf
...f you want ragged-right lines.
pad=$(printf '%0.1s' "-"{1..60})
padlength=40
string2='bbbbbbb'
for string1 in a aa aaaa aaaaaaaa
do
printf '%s' "$string1"
printf '%*.*s' 0 $((padlength - ${#string1} - ${#string2} )) "$pad"
printf '%s\n' "$string2"
string2=${string2:1}
done
Unf...
twitter bootstrap navbar fixed top overlapping site
... But when you minimizing the window the navbar appears after 40px how should i handle it..
– Aravindhan
Aug 30 '12 at 14:44
5
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廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
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0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:40088 nr:0 dw:0 dr:40248 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
# drbd-overview
0:r0/0 Connected Secondary/Secondary Inconsistent/Inconsistent
3.7.1 查看版本
#cat /proc/drbd
3.7.2 查看...
Python Pandas: Get index of rows which column matches certain value
...rame({'BoolCol': [True, False, False, True, True]},
index=[10,20,30,40,50])
In [53]: df
Out[53]:
BoolCol
10 True
20 False
30 False
40 True
50 True
[5 rows x 1 columns]
In [54]: df.index[df['BoolCol']].tolist()
Out[54]: [10, 40, 50]
If you want to use the index,
In [5...
Set the absolute position of a view
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You can use RelativeLayout. Let's say you wanted a 30x40 ImageView at position (50,60) inside your layout. Somewhere in your activity:
// Some existing RelativeLayout from your layout xml
RelativeLayout rl = (RelativeLayout) findViewById(R.id.my_relative_layout);
ImageView iv ...