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bash HISTSIZE vs. HISTFILESIZE?
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Short answer:
HISTSIZE is the number of lines or commands that are stored in memory in a history list while your bash session is ongoing.
HISTFILESIZE is the number of lines or commands that (a) are allowed in the history file at startup time of a session, and (b) are stored i...
Fastest way to determine if record exists
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@Declan_K: seems like my magic sphere failed in this case and a column entitled as id isn't PK. So +1 to your advice.
– zerkms
Aug 7 '13 at 22:00
4
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Iterator Loop vs index loop [duplicate]
I'm reviewing my knowledge on C++ and I've stumbled upon iterators. One thing I want to know is what makes them so special and I want to know why this:
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How to get the mouse position without events (without moving the mouse)?
...t; elements that changes a property (let's say font-family). In your load handler, cycle through each of the 4 million <a> elements, checking currentStyle / getComputedStyle() until you find the one with the hover font. Extrapolate back from this element to get the co-ordinates within the docu...
How to make git-diff and git log ignore new and deleted files?
...ometimes there's a couple of changed files together with some new, deleted and/or renamed files. When doing git diff or git-log I'd like to omit them, so I can better spot the modifications.
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Is it safe to shallow clone with --depth 1, create commits, and pull updates again?
...fied number of revisions.
That stems from commits like 0d7d285, f2c681c, and c29a7b8 which support clone, send-pack /receive-pack with/from shallow clones.
smart-http now supports shallow fetch/clone too.
All the details are in "shallow.c: the 8 steps to select new commits for .git/shallow".
Upd...
Is there a splice method for strings?
...unt, add);
return ar.join('');
}
Here's a jsperf that compares the two and a couple other methods. (jsperf has been down for a few months now. Please suggest alternatives in comments.)
Although the code above implements functions that reproduce the general functionality of splice, optimizing th...
What's the difference between SortedList and SortedDictionary?
...re any real practical difference between a SortedList<TKey,TValue> and a SortedDictionary<TKey,TValue> ? Are there any circumstances where you would specifically use one and not the other?
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Position icons into circle
...can I position several <img> elements into a circle around another and have those elements all be clickable links as well? I want it to look like the picture below, but I have no idea how to achieve that effect.
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Items in JSON object are out of order using “json.dumps”?
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Both Python dict (before Python 3.7) and JSON object are unordered collections. You could pass sort_keys parameter, to sort the keys:
>>> import json
>>> json.dumps({'a': 1, 'b': 2})
'{"b": 2, "a": 1}'
>>> json.dumps({'a': 1, 'b': 2},...