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When should I use “this” in a class?
... do not know when I really need to use it. For example, will be there any difference if I use x instead of this.x in some of the methods? May be x will refer to a variable which is local for the considered method? I mean variable which is seen only in this method.
...
minimum double value in C/C++
...oint, but the C standard requires -DBL_MAX to be exactly representable, so if the FP hardware is not capable of that, the implementation just has to work around it. See the floating-point model in 5.2.4.2.2 Characteristics of floating types <float.h> p2 of C99 (may have been moved elsewhere si...
initializing a boolean array in java
...
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iOS - Dismiss keyboard when touching outside of UITextField
...Where aTextField is the textfield that is responsible for the keyboard)
Swift 3 version looks like that
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard (_:)))
self.view.addGestureRecognizer(tapGesture)
For dismissKeyboard
@objc func dismissKeyboard (...
Cannot use object of type stdClass as array?
...ult.
You can access the data like this:
var_dump($result->context);
If you have identifiers like from-date (the hyphen would cause a PHP error when using the above method) you have to write:
var_dump($result->{'from-date'});
If you want an array you can do something like this:
$result ...
Should I Dispose() DataSet and DataTable?
... pretty surprising (that you’re essentially left to your own devices to sift though conflicting, ambiguous material to put the pieces together is frustrating at times but does provide a more complete understanding of the framework we rely on everyday).
After lots of reading, here’s my understan...
What are Makefile.am and Makefile.in?
...ure.ac or configure.in (deprecated). I prefer .ac (for autoconf) since it differentiates it from the generated Makefile.in files and that way I can have rules such as make dist-clean which runs rm -f *.in. Since it is a generated file, it is not typically stored in a revision system such as Git, SVN...
SSL Error: unable to get local issuer certificate
...
jww is right — you're referencing the wrong intermediate certificate.
As you have been issued with a SHA256 certificate, you will need the SHA256 intermediate. You can grab it from here: http://secure2.alphassl.com/cacert/gsalphasha2g2r1.crt
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Ruby on Rails - Import Data from a CSV file
...find what object returns CSV.parse(), I didn't find to_hash() and with_indifferent_access() methods... Maybe I looked in wrong place or missed some basic principle on how to traverse Ruby & Rails API docs. Can anyone share the best practice how to read Ruby API docs?
– V...
Searching for UUIDs in text with regex
...n your regex does not miss any UUID. However it may be useful to note that if you are searching especially for Microsoft's Globally Unique Identifiers (GUIDs), there are five equivalent string representations for a GUID:
"ca761232ed4211cebacd00aa0057b223"
"CA761232-ED42-11CE-BACD-00AA0057B223"
...