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Determining if a number is either a multiple of ten or within a particular set of ranges
...== 0) // It's divisible by 10
For the second one:
if(((num - 1) / 10) % 2 == 1 && num <= 100)
But that's rather dense, and you might be better off just listing the options explicitly.
Now that you've given a better idea of what you are doing, I'd write the second one as:
int ge...
App Inventor 2 字典 vs 列表：同样存数据，性能差了10倍？ - App应用开发 ...
<font size="4"><b>App Inventor 2 字典 vs 列表：同样存数据，性能差了10倍？</b></font><br><br><br>在做 App 开发时，你可能会遇到这样一个场景：要存储一组学生信息，包含姓名、年龄、班级，然后需要快速根据姓名查到对应的班级。用列...
List comprehension vs map
...n map needs a lambda:
$ python -mtimeit -s'xs=range(10)' 'map(lambda x: x+2, xs)'
100000 loops, best of 3: 4.24 usec per loop
$ python -mtimeit -s'xs=range(10)' '[x+2 for x in xs]'
100000 loops, best of 3: 2.32 usec per loop
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How do I raise the same Exception with a custom message in Python?
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12 Answers
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What's with 181783497276652981 and 8682522807148012 in Random (Java 7)?
Why were 181783497276652981 and 8682522807148012 chosen in Random.java ?
3 Answers
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C# 4.0: Can I use a TimeSpan as an optional parameter with a default value?
...meSpan? span = null) {
if (span == null) { span = TimeSpan.FromSeconds(2); }
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}
I should elaborate - the reason those expressions in your example are not compile-time constants is because at compile time, the compiler can't simply execute TimeSpan.FromSeconds(2.0) and stick the bytes o...
GoTo Next Iteration in For Loop in java
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352
continue;
continue; key word would start the next iteration upon invocation
For Example
for...
TINYTEXT, TEXT, MEDIUMTEXT, and LONGTEXT maximum storage sizes
...h
-----------+-------------------------------------
TINYTEXT | 255 (2 8−1) bytes
TEXT | 65,535 (216−1) bytes = 64 KiB
MEDIUMTEXT | 16,777,215 (224−1) bytes = 16 MiB
LONGTEXT | 4,294,967,295 (232−1) bytes = 4 GiB
Note that the number of characters that can be ...
Rearrange columns using cut
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152
For the cut(1) man page:
Use one, and only one of -b, -c or -f. Each LIST is made up of ...
Uniq by object attribute in Ruby
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205
Use Array#uniq with a block:
@photos = @photos.uniq { |p| p.album_id }
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