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detach all packages while working in R
... 2.13.1 Patched (2011-09-13 r57007)
Platform: x86_64-unknown-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_GB.utf8 LC_NUMERIC=C
[3] LC_TIME=en_GB.utf8 LC_COLLATE=en_GB.utf8
[5] LC_MONETARY=C LC_MESSAGES=en_GB.utf8
[7] LC_PAPER=en_GB.utf8 LC_NAME=C...
Is there a better way to express nested namespaces in C++ within the header
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JFYI clang-format cannot format that as you showing clang.llvm.org/docs/ClangFormatStyleOptions.html (NamespaceIndentation)
– KindDragon
Sep 6 '16 at 18:48
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How do you Encrypt and Decrypt a PHP String?
...BREACH on TLS).
Make sure you use mb_strlen() and mb_substr(), using the '8bit' character set mode to prevent mbstring.func_overload issues.
IVs should be generating using a CSPRNG; If you're using mcrypt_create_iv(), DO NOT USE MCRYPT_RAND!
Also check out random_compat.
Unless you're using an AE...
How to maintain aspect ratio using HTML IMG tag
...idth:auto;
height:auto;
}
Fiddle
If you want to display images of arbitrary size in the 64x64px "frames", you can use inline-block wrappers and positioning for them, like in this fiddle.
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How are Python's Built In Dictionaries Implemented?
... null
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Each row takes up 24 bytes on a 64 bit architecture, 12 on a 32 bit. (Note that the column headers are just labels for our purposes here - they don't actually exist in memory.)
If the hash ended the same as a preexisting key's hash, this is a collision, and t...
Running Selenium WebDriver python bindings in chrome
...that first and let homebrew make your life better) is to just run the following command:
brew install chromedriver
That should put the chromedriver in your path and you should be all set.
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Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...0000 Base _init
080487a0 DF *UND* 000000d1 gtk_window_set_default_size
080487b0 DF *UND* 00000056 gtk_label_new
080487c0 DF *UND* 00000085 gtk_window_new
080487d0 DF *UND* 00000213 gtk_widget_set_uposition
08048...
How to detect the OS from a Bash script?
...or a way to determine if the script is running on Mac OS X, Linux or Cygwin .
21 Answers
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How to encrypt/decrypt data in php?
...ollowing example would be recommended (>= 5.3):
$key_size = 32; // 256 bits
$encryption_key = openssl_random_pseudo_bytes($key_size, $strong);
// $strong will be true if the key is crypto safe
This can be done once or multiple times (if you wish to create a chain of encryption keys). Keep thes...
What is the size of an enum in C?
I'm creating a set of enum values, but I need each enum value to be 64 bits wide. If I recall correctly, an enum is generally the same size as an int; but I thought I read somewhere that (at least in GCC) the compiler can make the enum any width they need to be to hold their values. So, is it possib...