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How do I escape spaces in path for scp copy in Linux?
...\ c' .
does not work
scp localhost:'f/a b c' .
The reason is that the string is interpreted by the shell before the path is passed to the scp command. So when it gets to the remote the remote is looking for a string with unescaped quotes and it fails
To see this in action, start a shell with ...
How to create a trie in Python
...
Static memory-efficient Trie structures for Python (2.x and 3.x).
String data in a MARISA-trie may take up to 50x-100x less memory than
in a standard Python dict; the raw lookup speed is comparable; trie
also provides fast advanced methods like prefix search.
Based on marisa-trie C...
Left Join With Where Clause
...to retrieve all default settings from the settings table but also grab the character setting if exists for x character.
6 ...
How does the Java 'for each' loop work?
...
for (Iterator<String> i = someIterable.iterator(); i.hasNext();) {
String item = i.next();
System.out.println(item);
}
Note that if you need to use i.remove(); in your loop, or access the actual iterator in some way, you canno...
Getting RAW Soap Data from a Web Reference Client running in ASP.net
... break;
}
}
public void Log(SoapMessage message, string stage)
{
newStream.Position = 0;
string contents = (message is SoapServerMessage) ? "SoapRequest " : "SoapResponse ";
contents += stage + ";";
StreamReader reader = new StreamReade...
Linux: is there a read or recv from socket with timeout?
...econds;
tv.tv_usec = 0;
setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, (const char*)&tv, sizeof tv);
// WINDOWS
DWORD timeout = timeout_in_seconds * 1000;
setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, (const char*)&timeout, sizeof timeout);
// MAC OS X (identical to Linux)
struct timeval tv;
tv...
Random “Element is no longer attached to the DOM” StaleElementReferenceException
... to use a method like this with some success:
WebElement getStaleElemById(String id) {
try {
return driver.findElement(By.id(id));
} catch (StaleElementReferenceException e) {
System.out.println("Attempting to recover from StaleElementReferenceException ...");
return...
how does array[100] = {0} set the entire array to 0?
How does the compiler fill values in char array[100] = {0}; ? What's the magic behind it?
4 Answers
...
Unique fields that allow nulls in Django
...here is that the normalized "blank" value for a form CharField is an empty string, not None. So if you leave the field blank, you get an empty string, not NULL, stored in the DB. Empty strings are equal to empty strings for uniqueness checks, under both Django and database rules.
You can force the...
Why should C++ programmers minimize use of 'new'?
I stumbled upon Stack Overflow question Memory leak with std::string when using std::list<std::string> , and one of the comments says this:
...