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Which is faster: while(1) or while(2)?
...using gcc main.c -S -masm=intel with an optimization flag):
With -O0:
.file "main.c"
.intel_syntax noprefix
.def __main; .scl 2; .type 32; .endef
.text
.globl main
.def main; .scl 2; .type 32; .endef
.seh_proc main
main:
push rbp
.seh_p...
Is it possible to start activity through adb shell? [duplicate]
... with adb shell pm list packages -f and retrieve it with adb pull /path/to/file.apk C:\some\folder to use with the aapt command Chris commented. (aapt is in build-tools)
– Christopher Galpin
May 29 '14 at 23:12
...
Android App Not Install. An existing package by the same name with a conflicting signature is alread
...ion of app I'm updating "versionno" and "versionname" in app build.gradle file. Now I have made an release build with signed key, now while im trying to install that build in it through an error ::: An existing pacakage by the same name with a conflicting signature is already installed . And not ge...
List goals/targets in GNU make that contain variables in their definition
I have a fairly large makefile that creates a number of targets on the fly by computing names from variables. (eg foo$(VAR) : $(PREREQS)). Is there any way that gnu make can be convinced to spit out a list of targets after it has expanded these variables?
...
How can I install pip on Windows?
...ed-to-install-pip:
Download get-pip.py, being careful to save it as a .py file rather than .txt. Then, run it from the command prompt:
python get-pip.py
You possibly need an administrator command prompt to do this. Follow Start a Command Prompt as an Administrator (Microsoft TechNet).
This inst...
What is InnoDB and MyISAM in MySQL?
...current inserts: If a table has no free blocks in
the middle of the data file, you can INSERT new rows into it at the
same time that other threads are reading from the table. MySqlDoc
That is why, MyISAM is faster and takes less space. For instance, the MySQL MyISAM Storage Engine does not sup...
u'\ufeff' in Python string
...to this on Python 3 and found this question (and solution).
When opening a file, Python 3 supports the encoding keyword to automatically handle the encoding.
Without it, the BOM is included in the read result:
>>> f = open('file', mode='r')
>>> f.read()
'\ufefftest'
Giving the ...
记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...了验证这种可能，我搜索了一下MongoDB日志：
shell> grep FileAllocator /path/to/log
[FileAllocator] allocating new datafile ... filling with zeroes...
[FileAllocator] done allocating datafile ... took ... secs
我使用的文件系统是ext4（xfs也不错 ），创建数据文...
How do you execute an arbitrary native command from a string?
...s in this example, as run from the commandline:
>> &"C:\Program Files\Some Product\SomeExe.exe" "C:\some other path\file.ext"
And then in the script:
$command = '"C:\Program Files\Some Product\SomeExe.exe" "C:\some other path\file.ext"'
iex "& $command"
Likely, you could handle n...
Producing a new line in XSLT
...aining a newline approach if you use anything that might reformat your XSL file and mess with the whitespace.
– Ian Roberts
Nov 9 '12 at 0:17
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