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How to get nice formatting in the Rails console
...ease of Ruby 2.0.0.
For rails 4/ruby 2 you could use just
puts object.to_yaml
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What's the difference between array_merge and array + array?
...ce is:
The + operator takes the union of the two arrays, whereas the array_merge function takes the union BUT the duplicate keys are overwritten.
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How to check if a symlink exists
... difference between -L and -h ? in my bash ( version 4.2.53(1)-release (x86_64-redhat-linux-gnu ) man bash is identical for both -L and -h and they behave the same, ie they check that file actualy is a link and don't care whether the linked to file exists or not.
– philippe lha...
Disabling user selection in UIWebView
...elector(paste:)||
action == @selector(cut:))
{
return _copyCutAndPasteEnabled;
}
return [super canPerformAction:action withSender:sender];
}
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MySQL “NOT IN” query
...on%';
+-------------------------+------------------------------+
| Variable_name | Value |
+-------------------------+------------------------------+
| innodb_version | 1.1.8 |
| protocol_version | 10 |...
Graphviz: How to go from .dot to a graph?
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1. Install Graphviz from graphviz.gitlab.io/_pages/Download/Download_windows.html 2. Add 'C:\Program Files (x86)\Graphviz2.38\bin' to your system variable PATH 3. Open cmd and go to the dir where you saved the .dot file 4. Use the command 'dot yourFile.dot -Tpng -o i...
How to print matched regex pattern using awk?
...Relevant manual page: https://www.gnu.org/software/sed/manual/sed.html#Back_002dreferences-and-Subexpressions
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List of lists into numpy array
... mean, no iterative method or python map stuff)
– Juh_
Oct 4 '12 at 9:58
7
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How set maximum date in datepicker dialog in android?
...highlighted and selected, here is the image
– hasnain_ahmad
Jun 15 '17 at 4:41
@hasnain_ahmad Yes I realized that too,...
Is there any way to git checkout previous branch?
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@Erotemic in powershell it would be git reflog | ? { $_ -match ': checkout: moving from (.*) to (.*)'} | % { $Matches[1] } . In bash you have to write something equivalent (get reflog and filter it to lines containing ": checkout:" string and then extract branch name). This is a...