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What is meant by Resource Acquisition is Initialization (RAII)?
...object.
** Update2: as @sbi pointed out, the resource - although often is allocated inside the constructor - may also be allocated outside and passed in as a parameter.
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In C++, is it still bad practice to return a vector from a function?
...end(), sum2);
}
In the first example, there are many unnecessary dynamic allocations/deallocations happening, which are prevented in the second example by using an output parameter the old way, reusing already allocated memory. Whether or not this optimization is worth doing depends on the relativ...
In Visual Studio C++, what are the memory allocation representations?
...g/wiki/Magic_number_(programming)
* 0xABABABAB : Used by Microsoft's HeapAlloc() to mark "no man's land" guard bytes after allocated heap memory
* 0xABADCAFE : A startup to this value to initialize all free memory to catch errant pointers
* 0xBAADF00D : Used by Microsoft's LocalAlloc(LMEM_FIXED) t...
Automatically remove Subversion unversioned files
...
If you are on windows command line,
for /f "tokens=2*" %i in ('svn status ^| find "?"') do del %i
Improved version:
for /f "usebackq tokens=2*" %i in (`svn status ^| findstr /r "^\?"`) do svn delete --force "%i %j"
If you use this in a batch file you need to doubl...
Most lightweight way to create a random string and a random hexadecimal number
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Is this random/unique enough to be used in, say, session tokens?
– moraes
Jul 4 '11 at 12:31
1
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Using git, how do I ignore a file in one branch but have it committed in another branch?
...true
target-branch: SashaDevelop
repo: Kristinita/PaletteMira
github-token: $GITHUB_TOKEN
committer-from-gh: true
project-name: PaletteMira
verbose: true
Part of .gitignore:
*.sublime-snippet
*.suricate-profile
Part of misc/.gitignore
*.sublime-snippet
*.suricate-profile not in mis...
iOS 7 TableView like in Settings App on iPad
...lor = UIColor.clearColor;
CAShapeLayer *layer = [[CAShapeLayer alloc] init];
CGMutablePathRef pathRef = CGPathCreateMutable();
CGRect bounds = CGRectInset(cell.bounds, 10, 0);
BOOL addLine = NO;
if (indexPath.row == 0 && indexPath.r...
What are the barriers to understanding pointers and what can be done to overcome them? [closed]
...e array.
In memory, there will be some overhead associated with the house allocation, I'll illustrate this below like this:
---[ttttNNNNNNNNNN]---
^ ^
| |
| +- the FName array
|
+- overhead
The "tttt" area is overhead, there will typically be more of this for vari...
Is it better to call ToList() or ToArray() in LINQ queries?
...straints you should use ToList. In the majority of scenarios ToArray will allocate more memory than ToList.
Both use arrays for storage, but ToList has a more flexible constraint. It needs the array to be at least as large as the number of elements in the collection. If the array is larger, th...
Generate JSON string from NSDictionary in iOS
...escription);
return @"{}";
} else {
return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}
}
@end
.
@interface NSArray (BVJSONString)
- (NSString *)bv_jsonStringWithPrettyPrint:(BOOL)prettyPrint;
@end
.
@implementation NSArray (BVJSONString...