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MySQL - why not index every field?
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Indexing will take up more allocated space both from drive and ram, but also improving the performance a lot. Unfortunately when it reaches memory limit, the system will surrender the drive space and risk the performance. Practically, you shouldn't ind...
Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
...ny other matrix math function relies on size, stride and continuous memory allocation.
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Why should I declare a virtual destructor for an abstract class in C++?
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Yes it is always important. Derived classes may allocate memory or hold reference to other resources that will need to be cleaned up when the object is destroyed. If you do not give your interfaces/abstract classes virtual destructors, then every time you delete a derived ...
What is the difference between Cloud, Grid and Cluster? [closed]
...re architecture doesn't have to treat it as such. You can for instance not allocate the full capacity of your data center to a single request, whereas that is kind of the point of a cluster: to be able to throw 100% of the oomph at a single problem.
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UILabel sizeToFit doesn't work with autolayout ios6
... to calculate its height
For example:
self.descriptionLabel = [[UILabel alloc] init];
self.descriptionLabel.numberOfLines = 0;
self.descriptionLabel.lineBreakMode = NSLineBreakByWordWrapping;
self.descriptionLabel.preferredMaxLayoutWidth = 200;
[self.descriptionLabel setContentHuggingPriority:UI...
How can I return an empty IEnumerable?
...ore expensive operation because it would create an instance of a list (and allocate memory for it in the process)
– Igor Pashchuk
Jun 30 '11 at 20:14
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Where is array's length property defined?
...mponents present in the array. So it represents the total available memory allocated to that array, not how much of that memory is filled.
Example:
static class StuffClass {
int stuff;
StuffClass(int stuff) {
this.stuff = stuff;
}
}
public static void main(String[] args) {
...
Redefining NULL
...ll run into problems with functions that can return NULL. For example the malloc documentation states:
If the function failed to allocate the
requested block of memory, a null
pointer is returned.
Because malloc and related functions are already compiled into binaries with a specific NULL ...
Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...lSection;
FConnector: TIdTCPClient;
FTimeout: Integer;
FUser: string;
FToken: string;
function AddInternalParams(const vCmdLine: string): string;
public
constructor Create;
destructor Destroy; override;
procedure Init(const vHost: string; vPort: Integer);
procedure Logon(const vUser, vPW: ...
How do I get java logging output to appear on a single line?
...rd) {
StringBuilder sb = new StringBuilder();
// Minimize memory allocations here.
dat.setTime(record.getMillis());
args[0] = dat;
// Date and time
StringBuffer text = new StringBuffer();
if (formatter == null) {
formatter = new MessageFormat(format);
}...