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How to add leading zeros?
...paste0) are often the first string manipulation functions that you come across. They aren't really designed for manipulating numbers, but they can be used for that. In the simple case where we always have to prepend a single zero, paste0 is the best solution.
paste0("0", anim)
## [1] "025499" "02...
How do you beta test an iphone app?
...uch better solution than anything else out there.
– Josh Brown
Feb 2 '11 at 6:16
This one is about 10x prettier than "...
How can I remove the first line of a text file using bash/sed script?
...han sed. tail is also available on BSD and the -n +2 flag is consistent across both tools. Check the FreeBSD or OS X man pages for more.
The BSD version can be much slower than sed, though. I wonder how they managed that; tail should just read a file line by line while sed does pretty complex oper...
Can we make unsigned byte in Java
... // 8 bits representing that value
// From unsigned byte to int
byte b = 123; // 8 bits representing a value between 0 and 255
int i = b & 0xFF; // an int representing the same value
(Or, if you're on Java 8+, use Byte.toUnsignedInt.)
Parsing / formatting
Best ...
What's the fundamental difference between MFC and ATL?
...
I think the answer to your question is mostly historical, if you look back at how the two libraries originated and evolved through time.
The short answer is, if you are not doing anything "fancy", use ATL. It's great for simple user interfaces with COM thrown in....
Where is the itoa function in Linux?
... not very safe at all :- void some_func(char* a, char* b); some_func(itoa(123), itoa(456)); Care to guess what the function recieves?
– jcoder
Nov 13 '12 at 12:55
...
Why do you need to put #!/bin/bash at the beginning of a script file?
... older versions of BSD defaulted to csh (the C shell).
Even today (where most systems run bash, the "Bourne Again Shell"), scripts can be in bash, python, perl, ruby, PHP, etc, etc. For example, you might see #!/bin/perl or #!/bin/perl5.
PS:
The exclamation mark (!) is affectionately called "bang...
SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
...le.
You can also just install the CA files (I haven't tried this) to the OS -- there are lengthy instructions here -- this should work in a similar fashion, but I have not tried this personally.
Basically, the issue you are hitting is that some web service is responding with a certificate signed ...
Programmatically add custom event in the iPhone Calendar
...
Based on Apple Documentation, this has changed a bit as of iOS 6.0.
1) You should request access to the user's calendar via "requestAccessToEntityType:completion:" and execute the event handling inside of a block.
2) You need to commit your event now or pass the "commit" param to yo...
C++ code file extension? .cc vs .cpp [closed]
... considers that the compiler is not typically the only tool involved -- almost always, there is "make" or a similar utility that WILL care which extensions you use, for build rules matching -- then this answer really does not address the core concerns of the question. Note that there are variations ...