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Which characters need to be escaped when using Bash?
...1!s/^/"/; $!s/$/"/'.
2b. More readable version of 2
There's an easy safe set of characters, like [a-zA-Z0-9,._+:@%/-], which can be left unescaped to keep it more readable
I\'m\ a\ s@fe\ \$tring\ which\ ends\ in\ newline"
"
sed command: LC_ALL=C sed -e 's/[^a-zA-Z0-9,._+@%/-]/\\&/g; 1{$s/^$...
How to copy a row and insert in same table with a autoincrement field in MySQL?
...able ENGINE=MEMORY
SELECT * FROM your_table WHERE id=1;
UPDATE temp_table SET id=NULL; /* Update other values at will. */
INSERT INTO your_table SELECT * FROM temp_table;
DROP TABLE temp_table;
See also av8n.com - How to Clone an SQL Record
Benefits:
The SQL statements 2 mention only the fiel...
What does (x ^ 0x1) != 0 mean?
...mally it's to do with clearing a register (at least on 386+). xor eax, eax sets eax to zero in two bytes, but mov eax, 0 takes three or six bytes (depending on the encoding), and takes slightly longer to decode than the xor form.
– Matt
Dec 20 '13 at 11:02
...
smart pointers (boost) explained
What is the difference between the following set of pointers? When do you use each pointer in production code, if at all?
4...
How to loop through all the properties of a class?
...
private void ResetAllProperties()
{
Type type = this.GetType();
PropertyInfo[] properties = (from c in type.GetProperties()
where c.Name.StartsWith("Doc")
...
`testl` eax against eax?
...ated it with more reasoning to back up my claim that test a,a and cmp $0,a set flags identically; thanks for pointing out that that's a non-trivial claim. re: TEST vs. test: recently I've started using all-caps like Intel's manuals. But when I'm talking about AT&T mnemonics vs. Intel mnemonics...
What are the ways to make an html link open a folder
...
make sure your folder permissions are set so that a directory listing is allowed then just point your anchor to that folder using chmod 701 (that might be risky though)
for example
<a href="./downloads/folder_i_want_to_display/" >Go to downloads page</a...
What is the easiest/best/most correct way to iterate through the characters of a string in Java?
... in Chinese.
In that case your code will be:
String str = "....";
int offset = 0, strLen = str.length();
while (offset < strLen) {
int curChar = str.codePointAt(offset);
offset += Character.charCount(curChar);
// do something with curChar
}
The Character.charCount(int) method requires J...
Real World Example of the Strategy Pattern
... native queries with object databases, e.g. in db4o:
List<Document> set = db.query(new Predicate<Document>() {
public boolean match(Document candidate) {
return candidate.getSource().contains(source);
}
});
...
Class with single method — best approach?
...ng in the required parameters in the constructor, and allowing the user to set optional values through properties, or methods to set multiple interdependent values at the same time. Also, if a method has grown to this amount of complexity, it most likely needs to be in its own class anyways.
Demand...