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#ifdef replacement in the Swift language
...what I wanted by using custom Build Configurations:
Go to your project / select your target / Build Settings / search for Custom Flags
For your chosen target set your custom flag using -D prefix (without white spaces), for both Debug and Release
Do above steps for every target you have
Here's ...
Why does the Visual Studio editor show dots in blank spaces?
...en
Tools/Options/Environment/Keyboard/Mapping Scheme: Visual C++ 6
is selected.
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MySQL how to join tables on two fields
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SELECT *
FROM t1
JOIN t2 USING (id, date)
perhaps you'll need to use INNEER JOIN or
where t2.id is not null
if you want results only matching both conditions
...
Debug vs. Release performance
...ult. The ones
that move code around like
loop-invariant hoisting. In selected
cases, this can make a big difference
in performance. Not usually though.
Mapping breakpoints to execution
addresses is the job of the debugger.
It uses the .pdb file and info
generated by the JIT co...
How do I solve the INSTALL_FAILED_DEXOPT error?
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Restarting the emulator from the Android SDK and AVD Manager and selecting the option Wipe User Data has solved this problem for me.
You can find the option as highlighted in the below given image:
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How can I transition height: 0; to height: auto; using CSS?
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You can further refine it by selecting all child elements with * and applying other changes. Buttons should've been affected by my above code, however, if they were correctly styled with em.
– Steven Vachon
Oct 24 '...
What is the fastest way to send 100,000 HTTP requests in Python?
... Make sure you install the epoll reactor; otherwise you'll be using select/poll, and it will be very slow. Also, if you're going to actually try to have 100,000 connections open simultaneously (assuming your program is written that way, and the URLs are on different servers), you'll need to ...
SQL Server ':setvar' Error
...nterface in SQL Server Management Studio by going to the "Query" menu, and selecting "SQLCMD mode."
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How to deal with a slow SecureRandom generator?
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You should be able to select the faster-but-slightly-less-secure /dev/urandom on Linux using:
-Djava.security.egd=file:/dev/urandom
However, this doesn't work with Java 5 and later (Java Bug 6202721). The suggested work-around is to use:
-Djav...
How to grep for two words existing on the same line? [duplicate]
...if performance really matters. If you run two commands, you should aim to select the less frequently occurring word in the first grep to minimize the amount of data processed by the second.
Diagnosis
The initial script is:
grep -c "word1" | grep -r "word2" logs
This is an odd command sequence....