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How to easily resize/optimize an image size with iOS?
... image at a 60% quality setting. The contents of that NSData instance can then be written to disk or cached in memory.
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Pretty-print C++ STL containers
... you can make a couple of classes with static members once and for all and then just use those. Of course you're right that using print_container_helper isn't as elegant as just the operator<<. You can always change the source, of course, or just add explicit specializations for your favourite...
Download the Android SDK components for offline install
...ay you want to download platform api-9 and it is available on repository-7 then you have to do following steps
note the repository address and go to any other machine which has internet connection and type following link in any browser
https://dl-ssl.google.com/android/repository/repository-7.xml...
How to get a substring of text?
...for the change? If the OP works in Rails and asks for a solution in Rails, then the question should be tagged with Rails. And then your answer would make sense.
– Joó Ádám
Nov 16 '14 at 17:00
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What is the easiest/best/most correct way to iterate through the characters of a string in Java?
... c : s.toCharArray()) {
// process c
}
The first is probably faster, then 2nd is probably more readable.
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The role of #ifdef and #ifndef
...d.
This is just the C Pre-Processor (CPP) Directive equivalent of the if, then, else branch statements in the C language.
i.e.
if {#define one} then printf("one evaluates to a truth ");
else
printf("one is not defined ");
so if there was no #define one statement then the else branch of the stateme...
Fastest way to count exact number of rows in a very large table?
...(*) = COUNT(key). This is just wrong. If there is no NOT NULL constraint - then they can be not equal (in results as well as in execution plan).
– zerkms
May 20 '11 at 8:28
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What are the lesser known but useful data structures?
...rough k hash functions that will give you k indices in the array which you then set to 1.
To check if an item is in the set, compute the k indices and check if they are all set to 1.
Of course, this gives some probability of false-positives (according to wikipedia it's about 0.61^(m/n) where n i...
docker mounting volumes on host
... build the docker image and tag it some-volume
You run the container
And then,
You have another docker image that you want to use this volume
You run the docker container with the following:
docker run --volumes-from some-volume docker-image-name:tag
Now you have a docker container running that ...
Is it possible to “decompile” a Windows .exe? Or at least view the Assembly?
...told you that the number 1 meant scream and the number 2 meant giggle, and then held up cards with either 1 or 2 on them expecting you to scream or giggle accordingly, I would be using what is essentially the same system a computer uses to operate.
A binary file is just a set of those codes (usuall...