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How to copy an object in Objective-C
...ne
{
// We'll ignore the zone for now
YourClass *another = [[YourClass alloc] init];
another.obj = [obj copyWithZone: zone];
return another;
}
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Get nth character of a string in Swift programming language
...Int, see the documentation comment for discussion
– C0D3
Oct 14 '18 at 15:14
2
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How to re-sign the ipa file?
...sing these tools, don't hesitate to ask.
The heart of it is this:
CODESIGN_ALLOCATE=`xcrun --find codesign_allocate`; export CODESIGN_ALLOCATE
IPA="/path/to/file.ipa"
PROVISION="/path/to/file.mobileprovision"
CERTIFICATE="Name of certificate: To sign with" # must be in keychain
# unzip the ipa
unzip...
How to convert floats to human-readable fractions?
... Implementation and algorithm notes at hg.python.org/cpython/file/822c7c0d27d1/Lib/fractions.py#l211
– piro
Mar 28 '11 at 10:44
2
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Preserve line endings
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If file contains both \n (0x0A) and \r\n (0x0D 0x0A) - this proposed solution (of always re-injecting the \r) breaks it.
– Vlad
Sep 18 '15 at 13:23
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Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable
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Yes. Enumerable<>.Empty does avoid allocating a new object, which is a small bonus.
– Neil
Jan 4 '10 at 18:38
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【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
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.rehash = udp_v4_rehash,
.get_port = udp_v4_get_port,
.memory_allocated = &udp_memory_allocated,
.sysctl_mem = sysctl_udp_mem,
.sysctl_wmem = &sysctl_udp_wmem_min,
.sysctl_rmem = &sysctl_udp_rmem_min,
.obj_size = sizeof(struct udp_sock),
.h.udp_table = &udp_tab...
Undo a particular commit in Git that's been pushed to remote repos
... git revert 8213f7d but got this instead:error: Commit 8213f7dad1ed546b434a0d8a64cb783b530a5a30 is a merge but no -m option was given. fatal: revert failed
– Malcolm
Oct 2 '13 at 0:21
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What's the point of having pointers in Go?
...struct as a reference type when you find that useful e.g. to create a pool allocator (see below).
Custom Memory Allocator
Using pointers you can also create your own pool allocator (this is very simplified with lots of checks removed to just show the principle):
type TreeNode {
value int
le...
Eclipse executable launcher error: Unable to locate companion shared library
... reinstalling isn't that hard - download, unzip, change the default memory allocation, run Eclipse, install necessary plugins and features.
And almost all of the important preferences are in your workspace. The only important one I can think of outside of the workspace is the aforementioned memory ...