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Seeding the random number generator in Javascript
Is it possible to seed the random number generator (Math.random) in Javascript?
13 Answers
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Is there a way to specify how many characters of a string to print out using printf()?
...ogous to the "%8.8s" notation, but again allows you to specify the minimum and maximum lengths at runtime - more realistically in a scenario like:
printf("Data: %*.*s Other info: %d\n", minlen, maxlen, string, info);
The POSIX specification for printf() defines these mechanisms.
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Ruby class instance variable vs. class variable
...mmon to that class without having sub-classes automatically also get them (and vice-versa). With class variables, you have the convenience of not having to write self.class from an instance object, and (when desirable) you also get automatic sharing throughout the class hierarchy.
Merging these t...
String formatting: % vs. .format vs. string literal
... slightly different syntax from the existing % operator. Which is better and for what situations?
16 Answers
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Transparent ARGB hex value
...und color.
To get a fully transparent color set the alpha to zero. RR, GG and BB are irrelevant in this case because no color will be visible. This means #00FFFFFF ("transparent White") is the same color as #00F0F8FF ("transparent AliceBlue").
To keep it simple one chooses black (#00000000) or whit...
Can you call Directory.GetFiles() with multiple filters?
...s() method to retrieve a list of files of multiple types, such as mp3 's and jpg 's. I have tried both of the following with no luck:
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How do I check that a Java String is not all whitespaces?
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@Andreas_D: Heh, I got my orders! The OP said he wanted to check a string or char array, he never said anything about nulls! :) *checks the fine print in the contract* "null is not a string!"
– Carl Smotr...
How do I time a method's execution in Java?
... of the searches on Google return results for timers that schedule threads and tasks, which is not what I want.
40 Answers
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Is there a reason for C#'s reuse of the variable in a foreach?
...way that makes it highly prone to an error that is often difficult to find and debug, while producing no perceivable benefits.
Your criticism is entirely justified.
I discuss this problem in detail here:
Closing over the loop variable considered harmful
Is there something you can do with for...
How do you rotate a two dimensional array?
...e. Printing the matrix is the same complexitiy
– Alejandro
Aug 4 '15 at 20:34
6
For a -90 degrees...