大约有 7,200 项符合查询结果（耗时：0.0237秒） [XML]
How does free know how much to free?
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364
When you call malloc(), you specify the amount of memory to allocate. The amount of memory actu...
Simplest code for array intersection in javascript
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64
If your environment supports ECMAScript 6 Set, one simple and supposedly efficient (see specifi...
Render HTML to an image
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@Subho it's a String containing the URL with base64-encoded data
– tsayen
Feb 14 '17 at 16:00
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show 14 more comme...
What uses are there for “placement new”?
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64
We use it with custom memory pools. Just a sketch:
class Pool {
public:
Pool() { /* implem...
How to flush output of print function?
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64
With Python 3.x the print() function has been extended:
print(*objects, sep=' ', end='\n', fil...
Why does Java's hashCode() in String use 31 as a multiplier?
...value of -31 would have been better, and I would think something like -83 (64+16+2+1) might have been better yet (blenderize bits somewhat better).
– supercat
Mar 27 '14 at 22:02
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add column to mysql table if it does not exist
... for 1060 begin end;
alter table atable add subscriber_surname varchar(64);
end;;
call foo();;
I think its neater this way than with an exists subquery. Especially if you have a lot of columns to add, and you want to run the script several times.
more info on continue handlers can be found at...
Installing multiple instances of the same windows service on a server
...Gustav Bertram
12.9k33 gold badges3737 silver badges6464 bronze badges
answered Aug 14 '09 at 18:38
jamesaharveyjamesaharvey
13.1k...
How to .gitignore files recursively
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This works for me in on osx.
lib64/**/__pycache__/
lib/**/__pycache__/
*.py[cod]
.ipynb_checkpoints/
**/.ipynb_checkpoints/
.DS_Store
**/.DS_Store
share
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(![]+[])[+[]]… Explain why this works
...no int data type on the language, in fact all numbers are double-precision 64-bit format (IEEE 754 values), even though some operators work internally with Integer values (like the bitwise operators) the result is always a double. The 'i' comes in this example from undefined, but it could come from ...