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How to use an existing database with an Android application [duplicate]
... String sql ="SELECT * FROM myTable";
Cursor mCur = mDb.rawQuery(sql, null);
if (mCur != null) {
mCur.moveToNext();
}
return mCur;
} catch (SQLException mSQLException) {
Log.e(TAG, "getTestData >>"+...
Reading binary file and looping over each byte
...eeded.
Python 3
In Python 3, it's a bit different. We will no longer get raw characters from the stream in byte mode but byte objects, thus we need to alter the condition:
with open("myfile", "rb") as f:
byte = f.read(1)
while byte != b"":
# Do stuff with byte.
byte = f.re...
What is the most ridiculous pessimization you've seen? [closed]
...makes it too big.
Create lots of summary tables because recalculating from raw data is too slow.
Create columns with subfields to save space.
Denormalize into fields-as-an-array.
That's off the top of my head.
share
...
How to implement common bash idioms in Python? [closed]
...ia ./scriptname.ipy - if it fails with recognizing % and !
# but parses raw python fine, please check again for the .ipy suffix
# ugly example, please go and find more in the wild
files = !ls *.* | grep "y"
for file in files:
!echo $file | grep "p"
# sorry for this nonsense example ;)
See IP...
When is a C++ destructor called?
... the vector.
To manage that, what vector does under the covers is allocate raw memory via the Allocator object (which, unless you specify otherwise, means it uses ::operator new). Then, when you use (for example) push_back to add an item to the vector, internally the vector uses a placement new to c...
What does Redis do when it runs out of memory?
... The default maxmemory-policy in Redis 3.2 is now noeviction: raw.githubusercontent.com/antirez/redis/3.2/redis.conf
– LoicAG
Jul 14 '16 at 15:05
add a comment
...
Client to send SOAP request and receive response
...(default)</param>
/// <returns>A string containing the raw Web Service response</returns>
public static string SendSOAPRequest(string url, string action, Dictionary<string, string> parameters, string soapAction = null, bool useSOAP12 = false)
{
...
What are POD types in C++?
...
As I understand POD (PlainOldData) is just a raw data - it does not need:
to be constructed,
to be destroyed,
to have custom operators.
Must not have virtual functions,
and must not override operators.
How to check if something is a POD? Well, there is a struct for ...
What does FETCH_HEAD in Git mean?
...for alternate ref backends, read them from a file generically in refs_read_raw_ref().
With Git 2.29 (Q4 2020), Updates to on-demand fetching code in lazily cloned repositories.
See commit db3c293 (02 Sep 2020), and commit 9dfa8db, commit 7ca3c0a, commit 5c3b801, commit abcb7ee, commit e5b9421, com...
R script line numbers at error?
...m_type = "spot",
sim_scheme = "shape", sim_gran = "hourly", sim_adjust = "raw",
nsim = 5, start_date = "2017-07-01", end_date = "2017-12-31",
compute_averages = opt$compute_averages, compute_shapes = opt$compute_shapes,
overwrite = opt$overwrite, nmonths = opt$nmonths, forward_regime = opt$fregi...