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How do I execute a string containing Python code in Python?
...pser you should be mych more concerned with using exec at all (unless you know the code string comes from a trusted source).
– bruno desthuilliers
Dec 2 '19 at 17:00
add a com...
Convert xlsx to csv in Linux with command line
...hon2.7/dist-packages/prettytable-0.7.2-py2.7.egg/EGG-INFO/top_level.txt'). Now that I think about it, I got the same error with csvkit.
– user2105469
May 28 '14 at 17:24
...
When should I use a struct instead of a class?
... was overly eager. return false is what should have been there, correcting now.
– Andrei Rînea
Nov 13 '14 at 15:11
An...
What are the lesser known but useful data structures?
There are some data structures around that are really useful but are unknown to most programmers. Which ones are they?
83 A...
SQL update fields of one table from fields of another one
...ng the column names?
General solution with dynamic SQL
You don't need to know any column names except for some unique column(s) to join on (id in the example). Works reliably for any possible corner case I can think of.
This is specific to PostgreSQL. I am building dynamic code based on the the inf...
What is the purpose of using -pedantic in GCC/G++ compiler?
....
-pedantic causes the compiler to actually comply to the C standard; so now it will produce a diagnostic message, as is required by the standard:
gcc -c -pedantic -std=c90 pedantic_test.c
pedantic_test.c:2:9: warning: ISO C forbids zero-size array ‘zero_size_array’ [-Wpedantic]
int zero...
Is it possible to “await yield return DoSomethingAsync()”
...erators as implemented with yield are a blocking construct, so as of right now await and yield are incompatible.
Long Because iterating over an IEnumerable is a blocking operation, calling a method marked as async will still execute it in a blocking manner, since it has to wait for that operation t...
Using SSH keys inside docker container
...d 0700 /root/.ssh && \
ssh-keyscan github.com > /root/.ssh/known_hosts
# Add the keys and set permissions
RUN echo "$ssh_prv_key" > /root/.ssh/id_rsa && \
echo "$ssh_pub_key" > /root/.ssh/id_rsa.pub && \
chmod 600 /root/.ssh/id_rsa && \
chmod...
How do I load a file from resource folder?
...
Now I am illustrating the source code for reading a font from maven created resources directory,
scr/main/resources/calibril.ttf
Font getCalibriLightFont(int fontSize){
Font font = null;
try{
URL font...
Show SOME invisible/whitespace characters in Eclipse
...visible characters like tabs but not show other invisibles like spaces. I know that I can bulk turn all of these on in Eclipse, but I wonder if there is a way to show only some invisibles in Eclipse.
...