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PostgreSQL delete with inner join
... The best answer, especially the first one, as it allows you to match by multiple fields.
– Kostanos
Nov 14 '17 at 14:58
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Invoke(Delegate)
... understand what is actually going on behind the scenes, and what is meant by "GUI Thread", it's useful to understand what a Message Pump or Message Loop is.
This is actually already answered in the question "What is a Message Pump" and is recommended reading for understanding the actual mechanism...
App.Config Transformation for projects which are not Web Projects in Visual Studio?
...l Studio 2010 Web based application we have Config Transformation features by which we can maintain multiple configuration files for different environments. But the same feature is not available for App.Config files for Windows Services/WinForms or Console Application.
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Create a submodule repository from a folder and keep its git commit history
...--prune-empty --tag-name-filter cat -- --all
Replace <directory 1> by the folder you want to remove. -r will do it recursively inside the specified directory :). Now push to origin/master with --force
git push origin master --force
Boss Stage (See Note below)
Create a submodule from <...
Writing a dict to txt file and reading it back?
I am trying to write a dictionary to a txt file. Then read the dict values by typing the keys with raw_input . I feel like I am just missing one step but I have been looking for a while now.
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What is the use of the pipe symbol in YAML?
...ad of 6+ because the last block-level element is the array item (specified by -) and the literal is indented 4 from it. Somewhat surprisingly the final: | mapping is not considered a block element even though its value is multi-lined. It sort of makes sense if you think about it -- it's still just...
How to deal with “data of class uneval” error from ggplot2?
...t doesn't exist. For example, recently I forgot to tell ddply to summarize by one of my variables that I used in geom_line to specify line color. Then, ggplot didn't know where to find the variable I hadn't created in the summary table, and I got this error.
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Reference: mod_rewrite, URL rewriting and “pretty links” explained
...ss within your document root (i.e. next to your .php files).
* If allowed by the primary Apache configuration file; it's optional, but often enabled.
What mod_rewrite does not do
mod_rewrite does not magically make all your URLs "pretty". This is a common misunderstanding. If you have this link i...
const vs constexpr on variables
...ely useful.
Reference : "Programming: Principles and Practice Using C++" by Stroustrup
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Printing newlines with print() in R
...ng writeLines also allows you to dispense with the "\n" newline character, by using c(). As in:
writeLines(c("File not supplied.","Usage: ./program F=filename",[additional text for third line]))
This is helpful if you plan on writing a multiline message with combined fixed and variable input, su...