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Why is rbindlist “better” than rbind?
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By v1.9.2, rbindlist had evolved quite a bit, implementing many features including:
Choosing the highest SEXPTYPE of columns while binding - implemented in v1.9.2 closing FR #2456 and Bug #4981.
Handling factor columns properly - first implemented in v1.8.10 closing Bug #2650 and extended...
Python Pandas Error tokenizing data
...automatically determine this." I however have not had good luck with this, including instances with obvious delimiters.
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What is Full Text Search vs LIKE
...le columns. For example, you can search for "peach pie", and the index can include a title, keywords, and a body. Results that match the title can be weighted higher, as more relevant, and can be sorted to show near the top.
Disadvantages:
A fulltext index can potentially be huge, many tim...
Why escape_javascript before rendering a partial?
...form? I'm trying to find out why rendering a partial with javascript that includes another form that will submit via javascript causes the second request to be html instead of js. If you have time, could you please look at the question I already posted regarding this? Thanks! My question
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IIS7: HTTP->HTTPS Cleanly
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I use classic asp (intranet) and on pages that requires login the logon include file does the redirect:
if Request.ServerVariables("SERVER_PORT_SECURE") <> "1" or Request.ServerVariables("HTTPS") <> "on" then
Response.Redirect "https://" & Request.ServerVariables("SERVER_NA...
java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet
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Two possible answers:
1- You did not include spring-beans and spring-context jars in your lib.
If you are using maven (which will help a lot) those two lines will be enough
<dependency>
<groupId>org.springframework</groupId>
<artifactId...
Parsing boolean values with argparse
... a type in the Python sense, it is the function defined above, you need to include it somewhere.
– Maxim
Jan 30 '18 at 10:48
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How can I use different certificates on specific connections?
...round. Here's a sketch of how to initialize it:
/* Load the keyStore that includes self-signed cert as a "trusted" entry. */
KeyStore keyStore = ...
TrustManagerFactory tmf =
TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(keyStore);
SSLContext ctx = SSLCont...
How do I get a raw, compiled SQL query from a SQLAlchemy expression?
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The documentation uses literal_binds to print a query q including parameters:
print(q.statement.compile(compile_kwargs={"literal_binds": True}))
the above approach has the caveats that it is only supported for basic types, such as ints and strings, and furthermore if a bindp...
Read a variable in bash with a default value
...ad -p "Enter your name [Richard]: " name
name=${name:-Richard}
echo $name
Including the default value in the prompt between brackets is a fairly common convention
What does the :-Richard part do? From the bash manual:
${parameter:-word}
If parameter is unset or null, the expansion of word is subst...