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What is a bus error?
...*/
int main() {
int fd;
int *map;
int size = sizeof(int);
char *name = "/a";
shm_unlink(name);
fd = shm_open(name, O_RDWR | O_CREAT, (mode_t)0600);
/* THIS is the cause of the problem. */
/*ftruncate(fd, size);*/
map = mmap(NULL, size, PROT_READ | PROT_WRITE, MA...
What's the magic of “-” (a dash) in command-line parameters?
.../home | aescrypt -e -p apples -o backup_files.tar.aes - because the piping char | should make the presence of the last dash unnecessary. But without the last dash the command fails. Sounds illogical. Can someone please give me a reference where the naked dash meaning in command lines is explained. I...
Set TextView text from html-formatted string resource in XML
...use HTML markup in your Strings, you don't have to change a lot:
The only characters that you need to escape in your String resources are:
double quotation mark: " becomes \"
single quotation mark: ' becomes \'
ampersand: & becomes & or &
That means you can add your HTML mar...
How do you run a command for each line of a file?
... not too big and all files are well named (without spaces or other special chars like quotes), you could use shell command line expansion. Simply:
chmod 755 $(<file.txt)
For small amount of files (lines), this command is the lighter one.
xargs is the right tool
For bigger amount of files, or ...
Cross-browser multi-line text overflow with ellipsis appended within a fixed width and height
...see if the text block already fits, otherwise split the text into words or characters and define your bounds (lower=1 word/chars, upper=all words/chars), while ((upper-lower)>1) {let middle=((lower+upper)/2)|0 /*|0 is quick floor*/; if (test(words.slice(0,middle)+'...')) {lower=middle;} else {upp...
Does PowerShell support constants?
...NotNullOrEmpty()]$Name,
[Parameter(Mandatory=$true, Position=1)]
[char][ValidateSet("=")]$Link,
[Parameter(Mandatory=$true, Position=2)]
[object][ValidateNotNullOrEmpty()]$Mean,
[Parameter(Mandatory=$false)]
[string]$Surround = "script"
)
Set-Variable -n $name -val $m...
How to read a text-file resource into Java unit test? [duplicate]
...e - if not, just leave out the "UTF8" argument & will use the
default charset for the underlying operating system in each case.
Quick way in JSE 6 - Simple & no 3rd party library!
import java.io.File;
public class FooTest {
@Test public void readXMLToString() throws Exception {
...
Is short-circuiting logical operators mandated? And evaluation order?
...h C and C++.
If it wasn't, code like this would not be a common idiom
char* pChar = 0;
// some actions which may or may not set pChar to something
if ((pChar != 0) && (*pChar != '\0')) {
// do something useful
}
Section 6.5.13 Logical AND operator of the C99 specificat...
How can I get the behavior of GNU's readlink -f on a Mac?
...es, sys
libc = ctypes.CDLL('libc.dylib')
libc.realpath.restype = ctypes.c_char_p
libc.__error.restype = ctypes.POINTER(ctypes.c_int)
libc.strerror.restype = ctypes.c_char_p
def realpath(path):
buffer = ctypes.create_string_buffer(1024) # PATH_MAX
if libc.realpath(path, buffer):
ret...
How to print binary tree diagram?
...
I was trying to replicate the "selected answer" technique. But I think this one of the best answers here. So Robust and concise.
– Vikrant Goel
Apr 27 '15 at 7:29
...