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How to check if a python module exists without importing it
I need to know if a python module exists, without importing it.
13 Answers
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How does Bluebird's util.toFastProperties function make an object's properties “fast”?
In Bluebird's util.js file , it has the following function:
1 Answer
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Is it safe to resolve a promise multiple times?
...ine. Only thing to understand is that once resolved (or rejected), that is it for a defered object - it is done.
If you should call then(...) on it's promise again, you should immediately get the (first) resolved/rejected result.
Additional calls to resolve() will not (should not?) have any effe...
Textarea that can do syntax highlighting on the fly?
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It's not possible to achieve the required level of control over presentation in a regular textarea.
If you're OK with that, try CodeMirror or Ace (formerly skywriter and bespin), or Monaco (used in MS VSCode).
From the dupl...
How do I create a readable diff of two spreadsheets using git diff?
We have a lot of spreadsheets (xls) in our source code repository. These are usually edited with gnumeric or openoffice.org, and are mostly used to populate databases for unit testing with dbUnit . There are no easy ways of doing diffs on xls files that I know of, and this makes merging extremely...
Random number generator only generating one random number
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Every time you do new Random() it is initialized using the clock. This means that in a tight loop you get the same value lots of times. You should keep a single Random instance and keep using Next on the same instance.
//Function to get a random number
p...
Deleting an object in java?
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You should remove the references to it by assigning null or leaving the block where it was declared. After that, it will be automatically deleted by the garbage collector (not immediately, but eventually).
Example 1:
Object a = new Object();
a = null; // afte...
Avoiding if statement inside a for loop?
I have a class called Writer that has a function writeVector like so:
4 Answers
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When do I use the PHP constant “PHP_EOL”?
When is it a good idea to use PHP_EOL ?
19 Answers
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count vs length vs size in a collection
...), there may be 10 characters in a string, but storage is reserved for 20. It also may refer to number of elements - check source/documentation.
Capacity() - used to specifically refer to allocated space in collection and not number of valid elements in it. If type has both "capacity" and "size" de...