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How to concatenate items in a list to a single string?
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@Wouter, it will not. On the one hand, only lists of strings can be joined; so list.join would be inappropriate for an arbitrary list. On the other, the argument of str.join can be any "iterable" sequence of strings, not just a list. The only thing that ...
What are the Ruby Gotchas a newbie should be warned about? [closed]
... function as scope resolution operators.
To denote floating point numbers, one must follow with a zero digit (99.0) or an explicit conversion (99.to_f). It is insufficient to append a dot (99.), because numbers are susceptible to method syntax.
Boolean evaluation of non-boolean data is strict: 0, ""...
What is null in Java?
...s of Variables
Each class variable, instance variable, or array component is initialized with a default value when it is created:
For all reference types, the default value is null.
How this is used varies. You can use it to enable what is called lazy initialization of fields...
Why do I want to avoid non-default constructors in fragments?
I am creating an app with Fragments and in one of them, I created a non-default constructor and got this warning:
6 Answe...
How to use getJSON, sending data with post method?
I am using above method & it works well with one parameter in URL.
7 Answers
7
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Comparing two files in linux terminal
...ormat="" file1.txt file2.txt
[root@vmoracle11 tmp]# cat file1.txt
test one
test two
test three
test four
test eight
[root@vmoracle11 tmp]# cat file2.txt
test one
test three
test nine
[root@vmoracle11 tmp]# diff --changed-group-format='%<' --unchanged-group-format='' file1.txt file2.txt
test...
Pandas percentage of total with groupby
... @dhardy state_office is a Series with a Multi Index -- so it's just one column whose values are all numeric. After you do the groupby, each x is a subset of that column. Does that make sense?
– exp1orer
Feb 8 '15 at 15:22
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How to convert a string from uppercase to lowercase in Bash? [duplicate]
... # HELLO
y=${x,,}
echo $y # hello
z=${y^^}
echo $z # HELLO
Use only one , or ^ to make the first letter lowercase or uppercase.
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Run php script as daemon process
...is for years now. There might be better solution, but this is the quickest one.
– CDR
Jan 15 '10 at 8:07
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Eclipse IDE for Java - Full Dark Theme
...actually looks OK on Windows. You might need to change the system theme to one that uses similar colours for windows etc (e.g. download.microsoft.com/download/1/7/A/… for win 7 users) but you are 99% of the way there with just the defaults they give you, and there are additional tweeks listed in t...