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Is multiplication and division using shift operators in C actually faster?
... to do its job. This is not the case. You actually get better code from gcc -O3 on x86 with return i*10 than from the shift version. As someone who looks at compiler output a lot (see many of my asm / optimization answers), I'm not suprised. There are times when it can help to hand-hold the compi...
Python base64 data decode
...
LeviteLevite
14.7k77 gold badges4747 silver badges4545 bronze badges
...
How does the compilation/linking process work?
...ompilation
Compilation refers to the processing of source code files (.c, .cc, or
.cpp) and the creation of an 'object' file. This step doesn't create
anything the user can actually run. Instead, the compiler merely
produces the machine language instructions that correspond to the
source code file t...
Merging: Hg/Git vs. SVN
...erge-history) option to svn log and svn blame to take merge tracking into account.
In Git and Mercurial merge tracking is automatically taken into account when displaying history (log) and blame. In Git you can request to follow first parent only with --first-parent (I guess similar option exists ...
JavaScript hashmap equivalent
...r
NameDictionary and
NameDictionaryShape with
pertinent details in objects.cc
and objects-inl.h.
Firefox/Gecko:
JSObject,
NativeObject, and
PlainObject with pertinent details in
jsobj.cpp and
vm/NativeObject.cpp.
Do they handle collisions?
Yes. See above. If you found a collision on unequal strings...
Do sealed classes really offer performance Benefits?
...("NormalClass")
003c00ca 8b01 mov eax,dword ptr [ecx]
003c00cc 8b403c mov eax,dword ptr [eax+3Ch]
003c00cf ff5010 call dword ptr [eax+10h]
003c00d2 e8f96f106f call mscorlib_ni+0x2570d0 (6f4c70d0) (System.Console.get_Out(), mdToken: 060008fd)
003c00d7 8...
Android Fatal signal 11 (SIGSEGV) at 0x636f7d89 (code=1). How can it be tracked down?
...
#03 pc 0000d672 /system/lib/libxvi020.so
#04 pc 00010cce /system/lib/libxvi020.so
#05 pc 00004432 /system/lib/libwimax_jni.so
#06 pc 00011e74 /system/lib/libdvm.so
#07 pc 0004354a /system/lib/libdvm.so
#08 pc 00017088 /system/lib/lib...
How to install GCC piece by piece with GMP, MPFR, MPC, ELF, without shared libraries?
How do I install GCC (the GNU Compiler Collection) piece by piece, using the current version,
using the correct versions of dependencies, not using a package manager (like yum, rpm, apt, dpkg), and not using shared libraries?
...
How does Google Instant work?
...ated to this question. You can read how they tackled the extra load (5-7X according to the article) on the server-side, for example. The answer below examines what happens on the client-side:
Examining with Firebug, Google is doing an Ajax GET request on every keypress:
I guess it's working th...
How does this giant regex work?
...qMBCuYJobBVyZSh8PhVpagZrNJGaKZM62OG1VHwov2Z2veBHcLzjRWcJzK9YXrjcZAbI/EN0odN77Cawiv6747jFtPZ7BXCXwQrEVvzpzBAPZyLdaEFEjd4vVtPIEKy5rmEynrD3mwpIF3XRO9/JUprIiRA6ryc9Btbm4SDqgr8sf6AHZTfDfXmgZTl6e1xgG0dBYC8Lih7wmw2sRXVW41VG2pnyVVCVHQe4h06AeLFnPmccBx9LyRE7pAzcIbxONWo17/x9aYN27zqawwqbeqSA3CViPXh+3zV6YQL+3lp0...