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Database development mistakes made by application developers [closed]
...te or technical primary keys are those that have absolutely no meaning outside the system. They are invented purely for identifying the entity and are typically auto-incrementing fields (SQL Server, MySQL, others) or sequences (most notably Oracle).
In my opinion you should always use surrogate ke...
How do I execute a program from Python? os.system fails due to spaces in path
...g it.
If you're using Windows the following acts like double-clicking the file in Explorer, or giving the file name as an argument to the DOS "start" command: the file is opened with whatever application (if any) its extension is associated with.
filepath = 'textfile.txt'
import os
os.startfile(fi...
Dump Mongo Collection into JSON format
...se> -c <collection_name>
Also helpful:
-o: write the output to file, otherwise standard output is used (docs)
--jsonArray: generates a valid json document, instead of one json object per line (docs)
--pretty: outputs formatted json (docs)
...
Removing duplicate rows in Notepad++
...eed to download it from here: https://sourceforge.net/projects/npp-plugins/files/TextFX
The TextFX plugin used to be included in older versions of Notepad++, or be possible to add from the menu by going to Plugins -> Plugin Manager -> Show Plugin Manager -> Available tab -> TextFX -> ...
Go build: “Cannot find package” (even though GOPATH is set)
...
It does not work because your foobar.go source file is not in a directory called foobar. go build and go install try to match directories, not source files.
Set $GOPATH to a valid directory, e.g. export GOPATH="$HOME/go"
Move foobar.go to $GOPATH/src/foobar/foobar.go an...
Amazon S3 boto - how to create a folder?
...
There is no concept of folders or directories in S3. You can create file names like "abc/xys/uvw/123.jpg", which many S3 access tools like S3Fox show like a directory structure, but it's actually just a single file in a bucket.
...
A field initializer cannot reference the nonstatic field, method, or property
... (Only in the case of a partial class with "parts" in several files is the order of the field initializers unclear, but that goes for static fields as well!)
– Jeppe Stig Nielsen
Apr 18 '16 at 20:18
...
assign multiple variables to the same value in Javascript
I have initialized several variables in the global scope in a JavaScript file:
5 Answers
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How do you get assembler output from C/C++ source in gcc?
... and then stop before the assembler is run.
By default this will output a file helloworld.s. The output file can be still be set by using the -o option.
gcc -S -o my_asm_output.s helloworld.c
Of course this only works if you have the original source.
An alternative if you only have the resultant...
How do I measure request and response times at once using cURL?
...ming details that are provided. Times below are in seconds.
Create a new file, curl-format.txt, and paste in:
time_namelookup: %{time_namelookup}s\n
time_connect: %{time_connect}s\n
time_appconnect: %{time_appconnect}s\n
time_pretransfer: %{time_pretransfer}s\n
time_re...