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Using an ORM or plain SQL? [closed]
...ent store, when a ORM tool frees you from writing boilerplate SQL queries (selects by PK or by predicates, inserts, updates and deletes) and lets you concentrate on the problem domain.
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impro...
what is the most efficient way of counting occurrences in pandas?
...].astype('str').stack().value_counts().sum() which equates to setting each selected column to str type, stacking all individual columns on top, forming basically one column and then doing the value_counts() and sum() on that one column. :) Stack is pretty useful, it might not be the most obvious cho...
How many socket connections can a web server handle?
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The clients would randomly select a server. The chances of all randomly connecting to one is practically impossible. Although one could follow up with client count and the server could ask a client to move to another server if too overcrowded.
...
OS detecting makefile
...detected_OS := $(patsubst MINGW%,MSYS,$(detected_OS))
endif
Then you can select the relevant stuff depending on detected_OS:
ifeq ($(detected_OS),Windows)
CFLAGS += -D WIN32
endif
ifeq ($(detected_OS),Darwin) # Mac OS X
CFLAGS += -D OSX
endif
ifeq ($(detected_OS),Linux)
CFLAGS ...
Remote debugging with Android emulator
...s that it does not recognize the Android target of the emulator, so I must select the target at each run manually.
– Frank
Jul 2 '12 at 7:36
...
Convert HTML to PDF in .NET
...tmlToXSharp
Free
Concurrent conversion is implemented as processing queue
SelectPDF
https://selectpdf.com/pdf-library-for-net/
Free (up to 5 pages)
$ 499 - 1 developer, 1 deployment machine https://selectpdf.com/pricing/
https://www.nuget.org/packages/Select.HtmlToPdf/
If none of the options ...
HashSet versus Dictionary w.r.t searching time to find if an item exists
...value);
}
var testPoints = Enumerable.Repeat(1, TestReps).Select(_ => rand.Next()).ToArray();
var timer = new Stopwatch();
var total = 0;
timer.Restart();
for (int i = 0; i < TestReps; i++)
{
var newKey =...
How to see which flags -march=native will activate?
I'm compiling my C++ app using GCC 4.3. Instead of manually selecting the optimization flags I'm using -march=native , which in theory should add all optimization flags applicable to the hardware I'm compiling on. But how can I check which flags is it actually using?
...
Make git automatically remove trailing whitespace before committing
...vince Git to treat your changes as a patch:
git add -up .
Hit a+enterto select all changes for each file. You'll get a warning about Git fixing your whitespace errors.
(git -c color.ui=auto diff at this point reveals that your non-indexed changes are exactly the whitespace errors).
Remove the wh...
Renaming or copying files and folder using NERDTree on Vim. Is it possible?
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Press m on the node you want to then select (m)ove the current node. Moving is the same as renaming.
NERDTree Menu. Use j/k/enter and the shortcuts indicated
==========================================================
> (a)dd a childnode
(m)ove the curent n...