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Check if an apt-get package is installed and then install it if it's not on Linux
I'm working on a Ubuntu system and currently this is what I'm doing:
22 Answers
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What is SQL injection? [duplicate]
... explain SQL injection? How does it cause vulnerabilities? Where exactly is the point where SQL is injected?
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What integer hash function are good that accepts an integer hash key?
...h(i)=i*2654435761 mod 2^32
In general, you should pick a multiplier that is in the order of your hash size (2^32 in the example) and has no common factors with it. This way the hash function covers all your hash space uniformly.
Edit: The biggest disadvantage of this hash function is that it pres...
Get itunes link for app before submitting
...ou can submit the app without the binary but I based on what I have seen this is no longer possible. It seems you cannot submit without the binary and the binary is submitted through the application loader. Is there any other known way to get the itunes/app store link to my app before I submit the b...
How to get an IFrame to be responsive in iOS Safari?
The problem is that when you have to use IFrames to insert content into a website, then in the modern web-world it is expected that the IFrame would be responsive as well. In theory it's simple, simply aider use <iframe width="100%"></iframe> or set the CSS width to iframe { width: 10...
Hibernate, @SequenceGenerator and allocationSize
...uenceGenerator - it increases real database sequence by one , multiple this value by 50 (default allocationSize value) - and then uses this value as entity ID.
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What does a Ajax call response like 'for (;;); { json data }' mean? [duplicate]
I found this kind of syntax being used on Facebook for Ajax calls. I'm confused on the for (;;); part in the beginning of response. What is it used for?
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Is it pythonic to import inside functions?
...of the file, that way you can tell at a glance how complicated your module is by what it needs to import.
If I'm adding new code to an existing file I'll usually do the import where it's needed and then if the code stays I'll make things more permanent by moving the import line to the top of the fi...
How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
Note : Things have moved on since this question was asked; see here for a good recent overview.
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What is the difference between Hibernate and Spring Data JPA
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Hibernate is a JPA implementation, while Spring Data JPA is a JPA data access abstraction. Spring Data JPA cannot work without a JPA provider.
Spring Data offers a solution to the DDD Repository pattern or the legacy GenericDao custom...