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Sorting a vector of custom objects
...
A simple example using std::sort
struct MyStruct
{
int key;
std::string stringValue;
MyStruct(int k, const std::string& s) : key(k), stringValue(s) {}
};
struct less_than_key
{
inline bool operator() (const MyStruct& struct1, const MyStruct& struct2)...
Inspecting standard container (std::map) contents with gdb
... Note: the std::map functionality in these scripts assumes 32-bit pointer types. For 64-bit machines, replace "+ 4" to "+ 8" everywhere in the file.
– Kyle Simek
May 20 '12 at 20:22
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How to lock orientation during runtime
...nfiguration returns and what setRequestedOrientation wants - they are both int, but they are coming from different constant definitions.
Here's how to lock the current orientation, while allowing 180 degree flips
int currentOrientation = getResources().getConfiguration().orientation;
if (currentOr...
Is String.Format as efficient as StringBuilder
...may no longer apply to later versions.
String.Format uses a StringBuilder internally:
public static string Format(IFormatProvider provider, string format, params object[] args)
{
if ((format == null) || (args == null))
{
throw new ArgumentNullException((format == null) ? "format" :...
Haversine Formula in Python (Bearing and Distance between two GPS points)
... two points
on the earth (specified in decimal degrees)
"""
# convert decimal degrees to radians
lon1, lat1, lon2, lat2 = map(radians, [lon1, lat1, lon2, lat2])
# haversine formula
dlon = lon2 - lon1
dlat = lat2 - lat1
a = sin(dlat/2)**2 + cos(lat1) * cos(lat2) ...
UIButton custom font vertical alignment
...ls
FontTools include a TTX tool which enables conversion to and from XML.
Convert your font to .ttx in the same folder
ttx myFontFile.otf
Make the necessary edits to .ttx and delete the .otf file as this will be replaced in the next step.
Convert the file back to .otf
ttx myFontFile.ttx
Motiv...
How to insert a character in a string at a certain position?
I'm getting in an int with a 6 digit value. I want to display it as a String with a decimal point (.) at 2 digits from the end of int . I wanted to use a float but was suggested to use String for a better display output (instead of 1234.5 will be 1234.50 ). Therefore, I need a function t...
How to get existing fragments when using FragmentPagerAdapter
...d or tag for these created Fragments because FragmentPagerAdapter set them internally. So the problem is how to get a reference to them without that information...
Problem with current solutions: relying on internal code
A lot of the solutions I've seen on this and similar questions rely on gettin...
How would one write object-oriented code in C? [closed]
...
Basically you use a struct to hold both the data and a list of function pointers to point to the relevant functions for that data.
So, in a communications class, you would have an open, read, write and close call which would be maintained as four function pointers in the structure, alongside the d...
Is there a way to check if a file is in use?
... @ChrisW Why is that a bad thing. This community is here to point out good and bad answers. If a bunch of professionals notice this is a bad thing, and join to downvote, then the site is WAI. And before you get negative, if you read that article, they say to "upvote the right answer" no...