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Get Image size WITHOUT loading image into memory
...y operation too? And if it's lazy, does it read the image data at the same time?
– Mark Ransom
Sep 26 '13 at 17:51
The...
Concatenating null strings in Java [duplicate]
...onversion is
performed on the other operand to
produce a string at run time. The
result is a reference to a String
object (newly created, unless the
expression is a compile-time constant
expression (§15.28))that is the
concatenation of the two operand
strings. The characters of the
...
Removing duplicates from a list of lists
...ecause it's so much easier that it offers good returns on efforts. But sometimes (essentially for "tragically crucial bottlenecks" in deep inner loops of code that's pushing the boundaries of performance limits) one may need to go into much more detail, providing probability distributions, deciding ...
How to track untracked content?
...ve no local changes in it
git add vendor/plugins/open_flash_chart_2
This time when adding the directory, it is not a sub-repository, so the files will be added normally. Unfortunately, since we deleted the .git directory there is no super-easy way to keep things up-to-date with the source reposito...
Changing one character in a string
...e unicode capable applications in C. But you have to care about it all the time and need to test it explicitly to avoid trouble. Everything is machine-oriented. I worked with PHP before learning Python, and that language is a total mess. Regarding your note on fast CPUs I'm totally with you. But a p...
How to split text without spaces into list of words?
... very bad.
Optimization
The implementation consumes a linear amount of time and memory, so it is reasonably efficient. If you need further speedups, you can build a suffix tree from the word list to reduce the size of the set of candidates.
If you need to process a very large consecutive string...
When should I use double or single quotes in JavaScript?
..."');
alert("Say 'Hello'");
This can get complicated:
alert("It's \"game\" time.");
alert('It\'s "game" time.');
Another option, new in ECMAScript 6, is template literals which use the backtick character:
alert(`Use "double" and 'single' quotes in the same string`);
alert(`Escape the \` back-tick ...
What to do Regular expression pattern doesn't match anywhere in string?
...t_tags)
{
my $hash_ref = {};
# Now extract each of the fields one at a time.
($hash_ref->{"name"}) = $input_tag =~ /name="([^"]*)"/;
($hash_ref->{"value"}) = $input_tag =~ /value="([^"]*)"/;
# Put $hash_ref in a list or something, or otherwise process it
}
The basic principle her...
Replace console output in Python
...rrent iteration and total iterations as a progression bar with an expected time of finishing. Super useful and quick. Works for python2 and python3.
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What does an exclamation mark mean in the Swift language?
...ays:
"forced unwrapping": john! (gives the Person value if it exists, runtime error if it is nil)
"optional binding": if let p = john { println(p) } (executes the println if the value exists)
"optional chaining": john?.learnAboutSwift() (executes this made-up method if the value exists)
I guess ...