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In Bash, how can I check if a string begins with some value?
I would like to check if a string begins with "node" e.g. "node001". Something like
13 Answers
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Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
I have seen this sort of thing used a lot, but I think it is rather strange...
Wouldn't it be much clearer to say while(true) , or something along those lines?
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Python argparse command line flags without arguments
...nt w is expecting a value after -w on the command line. If you are just looking to flip a switch by setting a variable True or False, have a look at http://docs.python.org/dev/library/argparse.html#action (specifically store_true and store_false)
import argparse
parser = argparse.ArgumentParser()
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Why do all browsers' user agents start with “Mozilla/”?
...1.0 (Win3.1). It is publicly renamed to Netscape, but in its User-Agent it keeps its original name .
Internet Explorer is released. It spoofs Netscape by starting its User-Agent with Mozilla/ because web servers were routinely browser sniffing and serving pages with frames - a feature supported by b...
What do people find difficult about C pointers? [closed]
...nts' understanding to be the most common source of problems:
Heap vs Stack storage. It is simply stunning how many people do not understand this, even in a general sense.
Stack frames. Just the general concept of a dedicated section of the stack for local variables, along with the reason it's a 's...
Does Python have a string 'contains' substring method?
I'm looking for a string.contains or string.indexof method in Python.
10 Answers
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Get protocol + host name from URL
...uest.META.get('HTTP_REFERER') along with its protocol so that from URLs like:
15 Answers
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Windows: How to specify multiline command on command prompt?
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After trying almost every key on my keyboard:
C:\Users\Tim>cd ^
Mehr? Desktop
C:\Users\Tim\Desktop>
So it seems to be the ^ key.
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java: ArrayList - how can i check if an index exists?
...ArrayList<String> and I add data at specific indices,
how can I check if a specific index exists?
11 Answers
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How can i get the session object if i have the entity-manager
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JPA 1.0
With JPA 1.0, you'd have to use EntityManager#getDelegate(). But keep in mind that the result of this method is implementation specific i.e. non portable from application server using Hibernate to the other. For example with JBoss you would do:
org.hibernate.Session session = (Session) m...