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What does T&& (double ampersand) mean in C++11?
...t rvalue references by one of Microsoft's standard library developers.
CAUTION: the linked article on MSDN ("Rvalue References: C++0x Features in VC10, Part 2") is a very clear introduction to Rvalue references, but makes statements about Rvalue references that were once true in the draft C++11 ...
Using git repository as a database backend
...g a project that deals with structured document database. I have a tree of categories (~1000 categories, up to ~50 categories on each level), each category contains several thousands (up to, say, ~10000) of structured documents. Each document is several kilobytes of data in some structured form (I'd...
In what order are Panels the most efficient in terms of render time and performance?
...lity of a panel to accommodate stretching using alignments (or Auto in the case of the Grid) and then the number of children which are stretched or auto-sized. The performance of the Arrange pass is affected by the complexity of the interaction between layout location of different children and then...
Enabling auto layout in iOS 6 while remaining backwards compatible with iOS 5
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Autolayout can be enabled or disabled on each .storyboard or .xib file. Just select the particular file and modify the "Use Autolayout" property using the File inspector in Xcode:
Using autolayout enabled interface files with the dep...
Import PEM into Java Key Store
I am trying to connect to an SSL server which requires me to authenticate myself. In order to use SSL over Apache MINA I need a suitable JKS file. However, I have only been given a .PEM file.
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Is System.nanoTime() completely useless?
... the time value using a CPU specific counter. Now consider the following case I use to measure time of a call:
15 Answers...
Scala: Abstract types vs generics
I was reading A Tour of Scala: Abstract Types . When is it better to use abstract types?
4 Answers
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MySQL JOIN the most recent row only?
...reference. There is an additional table customer_data that stores a historical record of the changes made to the customer, i.e. when there's a change made a new row is inserted.
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Why does struct alignment depend on whether a field type is primitive or user-defined?
In Noda Time v2, we're moving to nanosecond resolution. That means we can no longer use an 8-byte integer to represent the whole range of time we're interested in. That has prompted me to investigate the memory usage of the (many) structs of Noda Time, which has in turn led me to uncover a slight ...
Why is a round-trip conversion via a string not safe for a double?
...r.cpp:
DoubleToNumber(value, DOUBLE_PRECISION, &number);
if (number.scale == (int) SCALE_NAN) {
gc.refRetVal = gc.numfmt->sNaN;
goto lExit;
}
if (number.scale == SCALE_INF) {
gc.refRetVal = (number.sign? gc.numfmt->sNegativeInfinity: gc.numfmt->sPositiveInfinity);
got...