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SEH stack 结构探索（1）--- 从 SEH 链的最底层（线程第1个SEH结构）说起 -...
...d037977 push offset ntdll32!_except_handler4 (777903dd)
7774dd29 64ff3500000000 push dword ptr fs:[0]
7774dd30 8b442410 mov eax,dword ptr [esp+10h]
7774dd34 896c2410 mov dword ptr [esp+10h],ebp
7774dd38 8d6c2410 lea ebp,[esp+10h]
7774dd3c 2be0 ...
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...
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....
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...
Canvas width and height in HTML5
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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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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Adding external library into Qt Creator project
...are using and put this in the CONFIG variable. And, for instance for Linux 64bit, then:
linux64 {
LIBSSL= $$OPENSSLPATH/linux64/lib/libssl.a
!exists($$LIBSSL): error ("Not existing $$LIBSSL")
LIBS+= $$LIBSSL
LIBCRYPTO= $$OPENSSLPATH/linux64/lib/libcrypto.a
!exists($$LIBCRYPTO): ...
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...
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...
Allowed memory size of 33554432 bytes exhausted (tried to allocate 43148176 bytes) in php
...o your PHP.ini file, change the line in PHP.ini
If your line shows 32M try 64M:
memory_limit = 64M ; Maximum amount of memory a script may consume (64MB)
If you don't have access to PHP.ini try adding this to an .htaccess file:
php_value memory_limit 64M
...