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Are there disadvantages to using a generic varchar(255) for all text-based fields?
...hat in practice stored very short strings.
It's best to define the column based on the type of data that you intend to store. It has benefits to enforce application-related constraints, as other folks have mentioned. But it has the physical benefits to avoid the memory waste I described above.
I...
Compile time string hashing
...ace, so you can store it in a std::unordered_map if you need consistency.
Based off of @JerryCoffin's excellent answer and the comment thread below it, but with an attempt to write it with current C++11 best practices (as opposed to anticipating them!).
Note that using a "raw hash" for a switch st...
Get file size, image width and height before upload
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Example using FileReader API
In case you need images sources as long Base64 encoded data strings
<img src="data:image/png;base64,iVBORw0KGg... ...lF/++TkSuQmCC=">
const EL_browse = document.getElementById('browse');
const EL_preview = document.getElementById('preview');
con...
Android Studio - How to increase Allocated Heap Size
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Thx, it's very usefull. FYI, if you use the 64bits version, the file to edit is named studio64.exe.vmoptions.
– Eselfar
Jul 11 '17 at 14:47
add ...
What's the difference between emulation and simulation? [duplicate]
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Based on software and system engineering experience, I'd summarise the difference as follows:
Simulation: for me, this is always in software - every aspect of the real system is only MODELLED by some code and/or mathematics....
Java Interfaces/Implementation naming convention [duplicate]
...sed. You could still come up with a better name than AbstractTruck and use BaseTruck or DefaultTruck instead since the abstract is in the definition. But since Abstract classes should never be part of any public facing interface I believe it is an acceptable exception to the rule. Making the constru...
Impossible to Install PG gem on my mac with Mavericks
.../pg_config
Once done, install the pg gem with
env ARCHFLAGS="-arch x86_64" gem install pg -- --with-pg-config=/usr/local/Cellar/postgresql/9.3.3/bin/pg_config
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Favicon dimensions? [duplicate]
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philippe_bphilippe_b
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pycharm running way slow
... suggest you some configuration change or workaround to remedy the problem based on the analysis of the provided data.
All the other "solutions" (like enabling Power Save mode and changing the highlighting level) will just hide the real problems that should be fixed.
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Format date and time in a Windows batch script
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Here is how I generate a log filename (based on http://ss64.com/nt/syntax-getdate.html):
@ECHO OFF
:: Check WMIC is available
WMIC.EXE Alias /? >NUL 2>&1 || GOTO s_error
:: Use WMIC to retrieve date and time
FOR /F "skip=1 tokens=1-6" %%G IN ('WMIC Pat...