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How to merge two files line by line in Bash
... paste will separate each column with a tab unless you override with the -d option, so you can use something like awk, sed, etc... to format each line. Example: paste file1.txt file2.txt | awk '{printf "%-61s | %s\n", $1,$2}' ... this mimics the diff --side-by-side output)
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Raise warning in Python without interrupting program
...ring>:1: MyCustomWarning: This is my custom warning.
For testing, consider assertWarns or assertWarnsRegex.
As an alternative, especially for standalone applications, consider the logging module. It can log messages having a level of debug, info, warning, error, etc. Log messages having a le...
How to invert a grep expression
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
“render :nothing => true” returns empty plaintext file?
...p...; path=/; HttpOnly
Cache-Control: no-cache
However, calling head provides a more obvious alternative to calling render :nothing because it's now explicit that you're only generating HTTP headers.
http://guides.rubyonrails.org/layouts_and_rendering.html#using-head-to-build-header-only-respo...
How to set web.config file to show full error message
...ur request.) . Now I want to see the full error message, by default it is hiding that because of some security reasons. I know that we can do this through web.config file. But how?
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Is there auto type inferring in Java?
...: var is not a keyword! From the JLS: "var is not a keyword, but rather an identifier with special meaning as the type of a local variable declaration". Thus, unlike keywords, there is nothing to stop you calling a variable or a method "var".
– Klitos Kyriacou
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Variable interpolation in the shell
...ap.sh
or
${filepath}_newstap.sh
or
$filepath\_newstap.sh
_ is a valid character in identifiers. Dot is not, so the shell tried to interpolate $filepath_newstap.
You can use set -u to make the shell exit with an error when you reference an undefined variable.
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How to create index in Entity Framework 6.2 with code first
...he migration file created by stating clusered:false in .Primarykey(x=>x.id,clustered:false) method
– Joy
May 10 '14 at 16:12
8
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How do you exit from a void function in C++?
...ou prematurely exit from a function without returning a value if it is a void function? I have a void method that needs to not execute its code if a certain condition is true. I really don't want to have to change the method to actually return a value.
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How to search through all Git and Mercurial commits in the repository for a certain string?
...flog. I don't know how common this is. I was trying out different hg/git bridges. I think it can also arise with dropped stashes. In any case, this alias works nicely to catch those cases: !git fsck --unreachable | sed -ne 's/^unreachable commit //p' | xargs git log --no-walk
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