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How to navigate through textfields (Next / Done Buttons)
...xtKeyView: (not setNextResponder:) method. The responder chain is separate from this: it's a hierarchy of responder objects that handle "untargeted" actions, e.g. actions sent to the first responder instead of directly to a controller object. The responder chain usually follows the view hierarchy, u...
Execute command on all files in a directory
...ec cmd option {} \; > results.out
-maxdepth 1 argument prevents find from recursively descending into
any subdirectories. (If you want such nested directories to get processed, you can omit this.)
-type -f specifies that only plain files will be processed.
-exec cmd option {} tells it to run ...
Difference between angle bracket < > and double quotes “ ” while including header files in C++? [dup
...ectory over system headers. <> usually is used for system headers. From to the specification (Section 6.10.2):
A preprocessing directive of the form
# include <h-char-sequence> new-line
searches a sequence of implementation-defined places for a header identified uniquely b...
How does this code generate the map of India?
...end of line. The number of characters drawn is a - 64. The value of c goes from 10 to 90, and resets to 10 when the end of line is reached.
The putchar
This can be rewritten as:
++c;
if (c==90) { //'Z' == 90
c = 10; //Note: 10 == '\n'
putchar('\n');
}
else {
if (b % 2 == ...
spring scoped proxy bean
...property name="userPreferences" ref="userPreferences"/>
</bean>
From the above configuration it is evident that the singleton bean 'userManager' is being injected with a reference to the HTTP Session-scoped bean 'userPreferences'. The salient point here is that the 'userManager' bean is a...
What it the significance of the Javascript constructor property?
...
September 2020 Update
The answer below is from the days of ECMAScript 3 and the first sentence is no longer true because since ECMAScript 6, the constructor property is used in a few places. However, I think the overall gist still applies. Thanks to T. J. Crowder for...
Change a Django form field to a hidden field
...oes without saying, but you'll need to import forms before this will work. from django import forms
– teewuane
Jul 30 '14 at 22:18
2
...
Behaviour of increment and decrement operators in Python
...parser is a blessing, not a curse. It puts us in handcuffs that prevent us from going overboard and ending up with funky grammar rules like some other dynamic languages that will go unnamed, such as Perl." I don't see how to disambiguate + + and ++ without breaking LL(1).
– Mik...
Execution of Python code with -m option or not
...
@flow2k: I mean that from Photos import ... will complain. So would import Photos.<something>. import Photos only works because Python supports namespaced packages (where two separate distributions provide Photos.foo and Photos.bar separate...
How to find memory leak in a C++ code/project?
...e associated with a pointer. When a dynamic variable becomes disassociated from its pointer(s), it becomes impossible to erase. Again, this results in a memory leak:
char* str1 = new char [30];
char* str2 = new char [40];
strcpy(str1, "Memory leak");
str2 = str1; // Bad! Now the 40 bytes are imp...