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How to parse JSON in Python?
...rformance. More recent versions provide optimizations that greatly improve read and writing.
– unode
Oct 14 '11 at 19:11
...
Does Java casting introduce overhead? Why?
...enerated machine code.
First that pointer to the runtime type needs to be read. This is necessary for calling a virtual method in a similar situation anyway.
For casting to a class type, it is known exactly how many superclasses there are until you hit java.lang.Object, so the type can be read at ...
What is the worst real-world macros/pre-processor abuse you've ever come across?
...
When I read about the compiler error "punishment", the first thing I thought of was "Dobby had to iron his hands".
– Graeme Perrow
Mar 19 '09 at 13:09
...
What happens to a declared, uninitialized variable in C? Does it have a value?
... // also zero
}
Non-static variables (local variables) are indeterminate. Reading them prior to assigning a value results in undefined behavior.
void foo() {
int x;
printf("%d", x); // the compiler is free to crash here
}
In practice, they tend to just have some nonsensical value in there ...
How to convert image to byte array
... way to get Byte array from image path is
byte[] imgdata = System.IO.File.ReadAllBytes(HttpContext.Current.Server.MapPath(path));
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Detect & Record Audio in Python
... # little endian, signed short
snd_data = array('h', stream.read(CHUNK_SIZE))
if byteorder == 'big':
snd_data.byteswap()
r.extend(snd_data)
silent = is_silent(snd_data)
if silent and snd_started:
num_silent += 1
elif no...
What is InnoDB and MyISAM in MySQL?
...ation to coarser granularity locks) and Oracle-style consistent nonlocking reads increase multi-user concurrency and performance. InnoDB stores user data in clustered indexes to reduce I/O for common queries based on primary keys. To maintain data integrity, InnoDB also supports FOREIGN KEY referent...
How to fetch all Git branches
... oneliner BEFORE git pull --all:
git branch -r | grep -v '\->' | while read remote; do git branch --track "${remote#origin/}" "$remote"; done
TL;DR version
git branch -r | grep -v '\->' | while read remote; do git branch --track "${remote#origin/}" "$remote"; done
git fetch --all
git pull ...
SAML vs federated login with OAuth
... has been established, and now your app can act as you on Twitter. It can read your posts, as well as make new ones.
SAML - For SAML think of some type of "agreement" between two unrelated membership systems. In our case we can use US Airways and Hertz. There is no shared set of credentials that...
NodeJS: Saving a base64-encoded image to disk
...
this is my full solution which would read any base64 image format and save it in the proper format in the database:
// Save base64 image to disk
try
{
// Decoding base-64 image
// Source: http://stackoverflow.com/questions/20267939/n...