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sizeof single struct member in C
...ic way to do it, another would be to use a macro like this:
#define member_size(type, member) sizeof(((type *)0)->member)
and use it like this:
typedef struct
{
float calc;
char text[255];
int used;
} Parent;
typedef struct
{
char flag;
char text[member_size(Parent, text)...
Why would $_FILES be empty when uploading files to PHP?
...empt to upload any file from a form, it seems to upload, but in PHP, the $_FILES array is empty. There is no file in the c:\wamp\tmp folder. I have configured php.ini to allow file uploads and such. The tmp folder has read/write privileges for the current user. I'm stumped.
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How to convert Strings to and from UTF8 byte arrays in Java
...]:
String s = "some text here";
byte[] b = s.getBytes(StandardCharsets.UTF_8);
Convert from byte[] to String:
byte[] b = {(byte) 99, (byte)97, (byte)116};
String s = new String(b, StandardCharsets.US_ASCII);
You should, of course, use the correct encoding name. My examples used US-ASCII and UT...
What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
...stdint.h> seems to be the proper way to ensure bitwidths using the int##_t types, though it's not yet part of the standard.]
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Validating IPv4 addresses with regexp
...|2[0-4][0-9]|[01]?[0-9][0-9]?)(\.|$)){4}$ get same result debuggex.com/r/mz_-0dEm3wseIKqK, pretty similar with @Mark Byers answer
– Sllouyssgort
Mar 24 '16 at 11:55
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How to get position of a certain element in strings vector, to use it as an index in ints vector?
...nting to the element, simply subtract v.begin() from the iterator:
ptrdiff_t pos = find(Names.begin(), Names.end(), old_name_) - Names.begin();
Now you need to check pos against Names.size() to see if it is out of bounds or not:
if(pos >= Names.size()) {
//old_name_ not found
}
vector i...
Getting LaTeX into R Plots
...t interferes with the ggplot ~ # tikzDecice combo
colnames(AR) <- c("$V_{BB}[V]$", "$V_{RB}[V]$" , "$V_{RC}[V]$" , "$I_B[\\mu A]$" , "IC" , "$V_{BE}[V]$" , "$V_{CE}[V]$" , "beta" , "$I_E[mA]$")
# make sure the working directory is where you want your tikz file to go
setwd("~/TexImageFolder/")
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How can I generate a unique ID in Python? [duplicate]
...have to manually kill uuidd as root. I worked around this by setting uuid._uuid_generate_time and uuid._uuid_generate_random to None so the uuid module never used the native implementation. (That should really be an option anyway; generating V4 random UUIDs causing a daemon to be started is comple...
获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...有几个。下面的代码执行了这个任务：
RemovableDeviceInfo_vt Functions::SearchRemovalDisks()
{
RemovableDeviceInfo_vt devInfos; //result
/*GUID_DEVCLASS_DISKDRIVE*/
CONST CLSID CLSID_DeviceInstance = { 0x4D36E967, 0xE325, 0x11CE, { 0xbf, 0xc1, 0x08, 0x00, 0x2b, 0xe...
获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...有几个。下面的代码执行了这个任务：
RemovableDeviceInfo_vt Functions::SearchRemovalDisks()
{
RemovableDeviceInfo_vt devInfos; //result
/*GUID_DEVCLASS_DISKDRIVE*/
CONST CLSID CLSID_DeviceInstance = { 0x4D36E967, 0xE325, 0x11CE, { 0xbf, 0xc1, 0x08, 0x00, 0x2b, 0xe...