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Creating an instance of class
... type Foo in dynamic memory. foo1 points to it. Normally, you wouldn't use raw pointers in C++, but rather a smart pointer. If Foo was a POD-type, this would perform value-initialization (it doesn't apply here).
/* 2 */ Foo* foo2 = new Foo;
Identical to before, because Foo is not a POD type.
...
Bulk insert with SQLAlchemy ORM
...em directly, we can produce an INSERT that is
competitive with using the raw database API directly.
Alternatively, the SQLAlchemy ORM offers the Bulk Operations suite of
methods, which provide hooks into subsections of the unit of work
process in order to emit Core-level INSERT and UPDATE...
What's the difference between ngModel.$modelValue and ngModel.$viewValue
...sion of the value, the value you see in the model, while $viewValue is the raw version.
To take this one step further imagine we do something that changes the $modelValue. Angular sees this change and calls $formatters to create an updated $viewValue (based on the new $modelValue) to be sent to th...
What is causing “Unable to allocate memory for pool” in PHP?
... more efficient to keep opcode in ram rather than having the corresponding raw php in file cache.
Nowadays we can find dedicated servers with 24Gb of memory for as low as $80/month, so don't hesitate to allow several GB to APC. I put 2GB out of 24GB on a server hosting 5Magento stores and ~40 wordpr...
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 >>"+...
How to return a file using Web API?
...and set the contentType to application/octet-stream if we want to send the raw bytes. Example:
[HttpGet("{id}")]
public IActionResult GetDocumentBytes(int id)
{
byte[] byteArray = GetDocumentByteArray(id);
return new FileContentResult(byteArray, "application/octet-stream");
}
...
Why is exception.printStackTrace() considered bad practice?
...rself, use logging framework like Logback or Log4J, to not put them on the raw console because it is very hard to control it.
With logging framework you can easily redirect stack traces to file, console or even send them to a specified e-mail address. With hardcoded printStackTrace() you have to li...
How to write a CSS hack for IE 11? [duplicate]
...org/css_hacks.html to see if the ie11 one is working natively for you. The raw css-only ie10-11 media query above should still work and combining that with the ie11 one to separate ie10 from ie11 within the media query (without the javascript) should work as well.
– Jeff Clayto...
Use numpy array in shared memory for multiprocessing
... step = N // 10
p.map_async(g, [slice(i, i + step) for i in range(stop_f, N, step)])
p.join()
assert np.allclose(((-1)**M)*tonumpyarray(shared_arr), arr_orig)
def init(shared_arr_):
global shared_arr
shared_arr = shared_arr_ # must be inherited, not passed as an argum...
doGet and doPost in Servlets
...out a bookmarkable request. Clicking a link, clicking a bookmark, entering raw URL in browser address bar, etcetera will all fire a HTTP GET request. If a Servlet is listening on the URL in question, then its doGet() method will be called. It's usually used to preprocess a request. I.e. doing some b...