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'echo' without newline in a shell script
...se echo inside an if with other commands, like "read", it might ignore the setting and it will jump to a new line anyway.
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How to Reverse Fragment Animations on BackStack?
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According to the android documentation for custom animation:
Change:
ft.setCustomAnimations(R.anim.slide_in, R.anim.hyperspace_out);
To:
ft.setCustomAnimations(R.anim.slide_in, R.anim.hyperspace_out, R.anim.hyperspace_in, R.anim.slide_out );
and now the backstack animates - In reverse!!
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Difference between objectForKey and valueForKey?
...WithInt:12345];
Account *newAccount = [[Account alloc] init];
[newAccount setAccountNumber:anAccountNUmber];
NSNumber *anotherAccountNumber = [newAccount accountNumber];
Using KVC, I can access the property dynamically:
NSNumber *anAccountNumber = [NSNumber numberWithInt:12345];
Account *newAcc...
How to revert a merge commit that's already pushed to remote branch?
git revert <commit_hash> alone won't work. -m must be specified, and I'm pretty confused about it.
16 Answers
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What is the best way to implement nested dictionaries?
...is a bad idea, don't do it. Instead, use a regular dictionary and use dict.setdefault where apropos, so when keys are missing under normal usage you get the expected KeyError. If you insist on getting this behavior, here's how to shoot yourself in the foot:
Implement __missing__ on a dict subclass t...
What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
... on objects are much more complex entities. You can create properties with setters/getters, with differing enumerability, writability, and configurability. An item in an array isn't able to be customized in this way: it either exists or it doesn't. At the underlying engine level this allows for a lo...
IntelliJ IDEA hint parameters of method
...Mac)
There is new feature in IntelliJ IDEA EAP:
Parameter name hints
Settings > Editor > General > Appearance
preview:
Video from JetBrains about this feature: https://youtu.be/ZfYOddEmaRw
Related question - IntelliJ shows method parameter hints on usage - How to disable it
I'm ...
Are the shift operators () arithmetic or logical in C?
... this will get you into trouble because the mask will have all of its bits set because the value being shifted (~0) is signed, thus an arithmetic shift is performed. Instead, you'd want to force a logical shift by explicitly declaring the value as unsigned, i.e. by doing something like this:
~0U &g...
How can I get browser to prompt to save password?
...o save your credentials if the form is submitted to itself. So you need to set action to some dummy page.
– user123444555621
Jul 22 '11 at 9:16
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Get the IP address of the machine
..."8.8.8.8";
uint16_t kDnsPort = 53;
struct sockaddr_in serv;
memset(&serv, 0, sizeof(serv));
serv.sin_family = AF_INET;
serv.sin_addr.s_addr = inet_addr(kGoogleDnsIp);
serv.sin_port = htons(kDnsPort);
int err = connect(sock, (const sockaddr*) &serv, sizeof(serv));...