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g++ undefined reference to typeinfo
...ke:
virtual void foo();
Should be defined (inline or in a linked source file):
virtual void foo() {}
Or declared pure virtual:
virtual void foo() = 0;
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Hide the cursor of an UITextField
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Well, then, perhaps you should file a bug at bugreport.apple.com because the iOS docs say: "If the text range has a length, it indicates the currently selected text. If it has zero length, it indicates the caret (insertion point). If the text-range object ...
Is there a way to suppress JSHint warning for one given line?
... in the documentation of JSHint you can change options per function or per file. In your case just place a comment in your file or even more local just in the function that uses eval:
/*jshint evil:true */
function helloEval(str) {
/*jshint evil:true */
eval(str);
}
...
How can I split a comma delimited string into an array in PHP?
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If that string comes from a csv file, I would use fgetcsv() (or str_getcsv() if you have PHP V5.3). That will allow you to parse quoted values correctly. If it is not a csv, explode() should be the best choice.
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Difference between android.app.Fragment and android.support.v4.app.Fragment
...er include the bytecode inside the runtime of the device or inside the jar file of the application. Support library code will be put in your jar, and provide the same feature as the runtime-provided code, so there's no reason not to use the modern and maintained support library instead of the ageing...
Xcode 4 - “Valid signing identity not found” error on provisioning profiles on a new Macintosh insta
...uding XCode 4.6, there is a better way to migrate your entire developer profile to a new machine. On your existing machine, launch Xcode and do this:
Open the Organizer (Shift-Command-2).
Select the Devices tab.
Choose Developer Profile in the upper-left corner under LIBRARY, which may be under t...
When to use IMG vs. CSS background-image?
...ou see <div> and the fact that it has an image is buried in another file somewhere, that seems like inefficient grokability. Just thinking out loud, could you still use <img> tag with no src and apply the background-image through CSS - or is that crazy talk?
– Mi...
Clone contents of a GitHub repository (without the folder itself)
... @JohnLittle Had the same problem, turns out there is a hidden .DS_Store file, that hides there. Simply rm .DS_Store and you're good to go.
– Selrond
Mar 22 '17 at 5:29
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Django Admin - Disable the 'Add' action for a specific model
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I think this will help you..
below code must be in admin.py file
@admin.register(Author)
class AuthorAdmin(admin.ModelAdmin):
list_display = ('name', )
list_filter = ('name', )
search_fields = ('name', )
list_per_page = 20
# This will help you to disbale add func...
Print All JVM Flags
...Options' hotspot/
Or, the following (which only looks at *.cpp and *.hpp files):
find hotspot/ -name '*.[ch]pp' -exec grep -F 'UnlockExperimentalVMOptions' {} +
Then look at the source files. Probably the best reason why there is no one document that describes all options is that some of these ...